1 Trillion total market cap will be reached by around May 2018. Definitely growth throughout the full of 2018 with 4-6 (5-10%) flash crashes along the way. My guess would be 1.2-1.3T market cap by year end.
Judging by the fact that Bittrex, Binance, and Cryptopia have restricted new accounts, there is a lot of interest on the sidelines. I don't know about other countries, but in Canada it is still very hard to get fiat under 100K into cryptos. Therefore there is a build up in Retail money for sure.
Popularity in acceptance and general interest will only grow so it's not unreasonable to assume that both institutional and retail money will continue to flow into this space.
ICO's will get crappier and crappier on aggregate so I am being very cautious and would recommend likewise.
OH and DRGN, SC, DENT will be rockets!