I'm looking at Ardor. Despite endless development and an upcoming launch, there isn't much hype yet. I think there is a lot of untapped potential in the blockchain-as-service sector that will be realized in the next year or two.

I think that privacy/fungibility is also the next battleground, and that privacy coins like XMR, DASH, and ZCASH will benefit greatly. Smaller privacy coins will likely rise as well.