EIP 1559 could be the biggest cause for an ETH pump this year if it gets implemented, and the probability is good.  With EIP 1559 part of the fee is burned, making ETH more or less becomes deflationary.  And it assures that only ETH can be used for the fee, increasing the demand somewhat.  Something to keep an eye on.   

I'm preparing by doing more hodling.  It's looking like the next year (or 2) could be the last time to get in before usage really takes off, and a good time to get into some of the more promising alts.  Loading up on BTC and ETH for obvious reasons (halving, 2.0, DeFi looking like it will blow up).  Loading or preparing to load up on alts with a DeFi angle or ones that are starting to actually get used like SNX, UOS, LINK, RLC, AGI, QNT, TFD, RSR, REN, MKR.  

A trader I know who's much smarter than me has ETH bids set at just below $100 and thinks it's very possible, so you're not alone in thinking that.   ETH 2.0 is on course to happen sometime from April to July of 2020 at the latest last I checked, so there could be some big swings coming. 

There's a lot of ifs here, but IF DeFi takes off like it looks like it's going to, IF staking a minimum of 32 ETH becomes lucrative, then ETH will probably 10x from where its at right now.  But that will likely take longer than the end of 2020.  End of 2020 my spitball guess is $417 if the above IFs start taking shape. 

It appears that the wheat is finally separating from the chaff and garbage projects or those that ran out of money too fast or couldn't keep up development are finally starting to be properly valued, and that's 95% of what's out there.  Projects with good teams like QNT, SNX, ENG, LINK, REN, FXC, AGI, MATIC, VID are hanging in there for now (maybe not VID, it plunged today for reasons I don't know yet, but very interesting team behind it).  Advice I'd give to noobs is to check the people behind the coins and see what past successes they've had, those are likely to be the best long term hodls. 

RVN, ZRX, VIDT, CHX, MITX, and SWM all could have a bright future as they have good FA.  Neo's ship has already sailed, same could maybe be said about some of the other older coins on that list.

As others have mentioned it's smart to have more than half your portfolio consisting of BTC and ETH for stability.  ETH's DeFi potential is looking good.

Some others that seem criminally undervalued are ENG, XTZ, AGI, RLC.   

AION and VET seemed dead for a while but have recently been reanimated.   AION changed focus and could jump if it gets a killer app.

UOS and SNX I agree on.  You seem to be good at DYOR. 

DCR seems like a good staking coin. 

Some of the smarter people I know are thinking DOGE could 3X like it has often done before the start of major altseasons in the past. 

1. How much longer will it be the king?  ETH and other cryptos are faster and have more features, perhaps making BTC obsolete soon if it doesn't keep up. 

2. How concerned should we be about quantum computing?   If the 5 million or however many bitcoins that are lost get their keys cracked it would plunge the price, though that might be the least of our worries if it happened. 

3. How can it achieve a better public image?  Most people who know almost nothing about bitcoin have a negative impression because they only hear about the negative aspects like criminal use. 

He's right, we'll either have a few big coins and a hundred thousand dead ones, or we'll have a thousand specialized cryptos, and its more likely the former.  Per Metcalfe's Law the value or effect of a network is proportional to the square of the number of users, and most apps will want to use ETH or whatever everyone else is using to stay connected. 

Like most people I see the irony of this statement being made by Ripple's big dog since it looks like their ship is done sailing and Stellar has a better odds of succeeding. 

DOGE isn't dead yet.  There was an update to the core wallet 4 months ago (Core 1.14) so it's still being developed. 

My biggest fear is a potential flippening where ETH or something else becomes the most valuable crypto and I've hodled BTC too long.  Like most people I've made the mistake of hodling things too long in the past, most of what I hodl is BTC but I don't want to be on the wrong side if ETH overtakes it, I'd like to have a crystal ball that tells me when to bail out long before that happens if it happens.  The probability of ETH taking over seems good considering the potential of DeFi and all the other use cases it has.  

Nobody knows the future but there's some things in the works that could trigger something similar next year or beyond.

The Bitcoin halvening is around May of 2020, right now about 1800 Bitcoins are mined every day, at today's prices that's around $16 million in USD value created every day.  It's questionable if there's that much in new demand for BTC on average every day, but once only 900 are created everyday if BTC is still the global standard things will be looking up. 

A lot of people smarter than me are thinking ETH could boom if ETH continues to be the platform of choice for DeFi and dApps.

The 2017 boom was partly from noobs entering via word of mouth, Facebook was full of posts by people telling their pals to get into XRP and ETH.  After the market crashed and many of these hodlers got burnt there's a lot of negative sentiment by normies toward crypto, but the halvening and short term memory could bring fresh blood again.   

Very weird market we're in now and strange that ETH isn't used more, but one way to frame it is that we're being given more time to accumulate than what we thought we'd have.  Part of me hopes this depressed market lasts another half year so I can accumulate more. 

ETH will likely get a lot more usage in the coming years.  Most dApps and DeFi usage is with ETH right now, and the future of both looks good.  If you read some of the leaked Delphi Digital reports that have been floating around, most of their focus right now is reporting on the future potential of DeFi.

Nobody knows the future blah blah blah but some areas look promising if you DYOR.
ETH will be huge if DeFi becomes huge, and the probability appears high.
AI-as-a-service could be big, if so coins like AGI and VXV could benefit. 
Exchange tokens could thrive after the regulatory clouds have passed.  KNC could do well, BNB might keep doing well.  BXY could be a steal if it survives as it's basically free right now courtesy of some FUD.

Nevermind, the wallet suddenly started staking automatically after a few months. 

Not just because of 2.0, there's a lot of DeFi and dApps potential. 

Everything in that list except BTC and ETH looks rather dead right now.  That's the problem with alts, they can't be held for more than a year or 2, they need to be sold when they appear to be peaking after good news or when they appear to be dying.

ETH and BTC are good to have in large quantities right now, especially ETH.  Some of the more promising alts that are being shilled a lot at the moment are LINK, NYZO, DAG, AGI, UOS, RLC, REN, QNT, RSR, MKR, ENG.  Do your own research on them and you might find some things you like. 

Some of the better traders are calling for DOGE to reach around 80 sats in the mid to long term.  Historically DOGE is the first coin to pump big when an alt season is approaching, check the past charts.  We'll see soon if history keeps repeating itself.  I sunk 1% of my portfolio into it, I think it's worth it for a potential 3x.