I posted these thoughts to the KS and was asked to bring them to the forum, so am reposting them here. I have been building models more than playing games.
70 tiles isn’t much to build a structure
Tiles in different colors could be a lot of fun (or with lines of different colors on one side, or some combo thereof, if you want random colors to be a game element)
Triangular (equilateral) or pentagram tiles could add some interesting design possibilities