I think privacy coins and cross block-chain solutions will be big this year. From privacy coins i'm really bullish on DeepOnion its such a low market cap and huge innovation pipeline with groundbreaking project completed and coming... its a no brainier.
From cross block-chain i do like Wanchain and do believe projects like these will be huge.
I dont know why privacy coin is very famous because there are many several privacy coin out there like monero, xpect and deeponion too. Ow many privacy coin do we need? I think only one but the best one.
Cross blockchain project is our solution now. Its very good for us to solve any kind of problem.