I think to have a bull market up-coming is the best way to move all the money that you have in altcoins to bitcoin, because with market dominance of Bitcoin the market will go green, and the bull run with start, as far as I am concerned from the previous experience of the bull run more than 55% bitcoin was dominant in the market.
Suggestions?
BTC is not the only option. I consider that in 2019 we will have a new king and it is almost impossible to define this king right now, because everything is changing.