Love the list. Not sure why you think COSS is a high chance of failure though. They have an okay working product in beta and more exchanges are always good.
I've been holding my tokens since ICO.
Theres just a ton of current & future competition, that's all i'm saying.
--Binance rose in popularity pretty darn quick iirc. Coss could follow the same path. If it somehow gets serious daily volume, then yes ofc, itll be plently profitable