Running a full bitcoin node will not promote your transaction or will speed up its confirmation.

There are some other benefits from running a full node, like helping the network, also, it is safer since you will not have to trust an external server when broadcasting your transactions, in addition to that, in case of hard fork, you will have the possibility to choose which blockchain you want to support.
Keep in mind that you need 150Go of free disk space and at least 2Go of RAM to run a bitcoin node, besides you have to keep your computer running for more than 6 hours daily.

If I understood your proposal correctly, I think you want the transaction fee to be fixed using a FIAT currency (then, automatically convert it to BTC)!!
Well, I think you can do that without waiting for a fork to happen, just put the amount you want to pay (you can use a USD to BTC converter) when sending your transaction, many wallets offer the possibility to define Tx fee.
The problem is if miners will accept to confirm it when you add low fee. 

OP is asking about how to create a wallet app from scratch not creating a wallet account.

I think you will find many online tutorials that will help you build your wallet. And since you are a c# developer it is not going to be hard because you will find a  lot of libraries that you can use.
I hope you will find some useful information here:
https://www.codeproject.com/Articles/1115639/Build-your-own-Bitcoin-wallet
I will come back later with more links.

Are you serious!! it is obvious and does not require any brilliancy to answer that question.
Investing in Bitcoin is more profitable: "Of all currencies worldwide, Bitcoin yielded greater returns than any for 5 out of the previous 6 years (2011- Bitcoin +1500 percent, 2012- Bitcoin +299 percent, 2013- Bitcoin +5400 percent, 2014- USD +13 percent, 2015- Bitcoin +37 percent, 2016- Bitcoin +130 percent)." You can find more here: https://www.thebalance.com/should-you-invest-in-stocks-or-bitcoin-4121151
Also investing in Bitcoin is really easy and any one can do it. It does not require any experience or a specific knowledge.

Bitcoin Gold, Bitcoin Silver, Bitcoin Dimond... they have no imagination even in choosing names how will they be able to convince the community to support their forks.
We hear about new forks everyday but we never know the real reason behind them.
The good thing is that rumors about forks do not affect bitcoin value anymore, in the contrary, after each fork bitcoin value ascend.

He used to call it a fraud but when bitcoin went up more than six times in price in less than a year he was obliged to change his convictions.
 
James Dimon declaration can be accepted since he had a reputation as a prudent financier distrustful speculative products  that is why he refused to support Bitcoin.
Not only J. Dimon, many known financiers and bankers are changing their attitude toward Bitcoin and start investing in it because they know that blockchain will be the future of finance.

If you want to be safe you should think like a hacker.
First, a hacker will try to hack your passwords throw trojans, malwares or anything to gain access to your computer, so, you have to use a good antivirus and never download a file from an untrusted website.
Then, a hacker can pretend to be your friend to collect as much information as possible such as birth date or best friend name. Those information can be valuable when trying to reset your passwords.
Hacking a human mind is always easier than hacking a software.

First of all you should tell us who the ... is Nikolai Nikiforov and why we should care about what he says.
After making some researches i knew that he is the Russian minister of communications.
I think that what he says have no sense taking in consideration the huge number of ICOs started from Russia and not being banned till now.
Governments can not stop bitcoin anymore.

This is one of the most profitable project I ever seen. Low electricity cost is a plus, 0.007$/KWH is almost negligible.
To be accurate, 640$ is the daily profit from your farm, (I used a Bitcoin mining profit calculator).

I would like to see pics and to hear more about your experience.

Honestly,  for someone using Bitcoin for daily expenses and normal purchases it is becoming impractical due to high fees and the long time a transaction can take to get confirmed.
On the other hand, holders and investors are satisfied with the increase of bitcoin value.

I think there will be a fork in the near future that will fix this issues otherwise people will no longer use bitcoin as a payment method.

EtherDelta is a great decentralized trading platform an it is really easy to use. The problem is that OP wants to exchange bitcoin which is not possible on ED, you can only trade Ether and Ethereum-based tokens.
Personally, I recommend Bittrex, I have been using it for a long time and the only thing I can complain about is high withdrawal fees.

As far as I know, Exodus is a good wallet and it supports 2FA. Therefore, it is most likely the youtuber fault, Iam sure he wasn't careful.

You can make your bitcoin wallet secure and safe by following simple steps:
- always update Antivirus
- Use a strong password
- Backup your wallet
- Encrypt your wallet
- Use two-factor authentication ...

If governments adopt this choice, no one will use bitcoin as a payment method.
The majority prefer bitcoin because it is free to use and all you have to do is to pay transaction fee which is generally negligible.

Technically speaking, it will be hard to implement taxes on transactions due to the fact that bitcoin network is decentralized and transactions are almost untraceable.

We are already in the bitcoin era 
Many believe that bitcoin will have a bright future and I am one of them.
It is true that cryptocurrency is helping people make respectful income and, also it offers them the possibility to start their project without being controlled by government or being dependant to banks.

You can choose a customized fee and your transaction will be confirmed (choose a reasonable fee).
I think your analysis is wrong, take a second look at the chart : https://blockchain.info/charts/cost-per-transaction?timespan=1year
Now take a look at bitcoin price chart: https://coinmarketcap.com/currencies/bitcoin/#charts
You will find that the cost per transaction "in bitcoin not usd" is the same during the whole year, it's just btc price rising.
The chart is about cost per transaction (miners revenue divided by the number of transactions) not transaction fee.

Banning bitcoin on those countries have no impact, I don't think there are many people involved in crypto world from these countries.
The only concern for third world governments is how to apply taxes on their citizens that's why they ban bitcoin and prohibit traders from using it since it will be impossible to track money circulating through the digital network. 

All points you mentioned are useful when it comes to determine how credible the ICO is.
To be honest, I don't really care about website design since you can buy a great template with few bucks.
There are many other things you can check as how much the project team invested to advertise their ICO also their previous experience...
It is all about the team, a good tea can make any project succeed.

I think you should take your time and think about what you are going to do. It is clear that you are new to mining and don't have enough experience.

At least don't invest all your money, you can start with a small amount and if every thing goes well you can invest more.
I hope we will hear good news about your mining experience in the near future.

What do you mean by easy money!! there is no such thing.

You have to work hard to earn money especially bitcoin. No one will send you bitcoin for free, you should do something in return.
It is freelancing: you offer a service and you get paid for it.
The advantage from being paid in bitcoin is low transaction fees and its price growing every day.

There are many ICO and you have to be careful before investing your money in any of them.
Cryptocurrency world is in its first stages therefore it is normal to find many scams and unexperienced people trying to lead big projects.
I advise you to read carefully the whitepaper (many neglect this point), know more about team members behind the project and try to assess the feasibility of the project.
When you choose which ÌCO you will invest your money in, wait for sales, you can get good discount.