Yeah I get your thinking exactly. Wee bit of a miscommunication though, I don't own any ETH ^^ Just feel like I missed the boat for the exact same reasoning you are using. At best I can see 10x returns on ETH in the next few years, while with other projects I can see the same potential in months or even possible 100x.
I realize it is a little optimistic but that is the benifit of owning a portfolio rather than just BTC. Right now it feels like I should have kept all my BTC but come the 30th I will be laughing :)
(Seriously though, who would of thought BTC would run up this much this early.)
I have enough free time to read up on most coins so just try to find under-valued ones with real world use cases and hope by 2020 I was right ^^