ADA is built with serious technology (haskell) and the team looks great; They can be seen in many Youtube vids and Twitter pic posts so they look real to me!

This is a staking coin so it is not mined - people will want lots when staking kicks in.

Checkout the Github pages and see how active these guys are in changing the face of this space.

They have links to many academic institutions with crypto being treated as a science - many detailed docs on their website!

This coin was created with a goal to address many of the design flaws in some of the major coins out there so potentially a serious ETH contender!!!

This project looks great, and the future looks bright for the development of this coin.

I have to say this looks a nice coin and the team looks solid and strong, the academic links and documentation to this project are good too so I'm expecting great things to come.
I heard that ADA is a staking coin so people will be able to earn rewards from the wallet when that part of the system is working - not sure how it will work though but wanting to find out more.
I will keep an open mind as I have a gut feeling it's a bit of a dark horse.

I think, if bitcoin died it would probably be due to either technology failure (scalability, speed, convenience) or legal regulation. If it were the first option then Altcoins would be more important because one would need to step up to fill the empty boots but if it were the second, it would fall to the Altcoins that could best comply with the regulations. The rest of the market would either die, become private tech or go underground into a kind of black market and the successor would be some sort of mainstream blockchain controlled by the elite. 

It would be feasible to assume BTC will eventually fade but Bitcoin Cash or another forked coin will replace and become it. Only when the trading platforms begin to adopt a new coin as the default will this truly begin to happen.