I am not sure when the next BTC run will start or if it will ever start again, but I see the current dropping market dominance as a positive sign.
Finally altcoins are getting more attention and the more BTC loses its dominance the less altcoins are dragged by BTC.

This is wonderful and that's why I believe more than ever, that 2018 (and maybe 2019) is the year of the altcoins.

Let's enjoy experiencing the slow but rising mass adoption.