Was anybody able to predict future for Bitcoin two years ago? This world is so fast changing that it is very difficult. Nowadays I think that most of altcoin will disappear, but the same propability is that most of them will be valueable.
Even this can be found encouraging, because the prices are still higher, then they were two years ago, so maybe we need to see the long term perspective instead...
Remember 2 years ago NEO still called as antshares and it's only owrth not more than 20 cents at that time and this time it's worth more than $35 and that looks a very good amount in my opinion.
This will be following the development of altcoin itself. If the developer can complete all of milestones and its promise and it will worth a lot 2 years later.