I am waiting for the First Order, and the Resistance to be cut into their own factions.
So far, that would only be 3 ships for each of them if every viable ship from TFA is added. T-70, Millennium Falcon, and Resistance transport for the Resistance, and TIE/fo, TIE/sf, and Upsilon shuttle for First Order. If they get spun off into separate factions, I would imagine that would at least be post-Episode 8 so that more ships will have time to be introduced.