I believe in altcoins very strongly as well. People need real life user cases and not digital gold hoarded by first movers.
So I think the projects that are best at bringing the common people in without feeling that they were late for the glory days will succeed in 2018. Because this is the year of cryptos for the masses!
There certainly is a lot of new money coming into the space, and altcoins are getting their fair share, I think that BTC dominance being down in recent weeks proves as much definitively.