Aw, I thought they'd be, like - the equivalent of choosing characters. In any case, the game's really cool!
I suppose if you ever feel like it, that could be material for a future update, eh? that said the game seems pretty finished as is so it'd more just be a matter of whether you'd rather mostly leave it as a finished product or have a lil extra fun with it. considering you spent 2 years on it you've already done far more than enough