My eyes are on waves,qtum and Neo as i think all three have captured a specific dapp market for them and they have good team and community backing them. Waves have come with smart contract and they already have fast dex but i see good growth of waves in coming years  only when they focus more on marketing as they had poorly performed in this criteria. As for qtum and Neo i like to see if they come up with new dex to boost their exisiting technology.