It would be interesting if you could possibly make pets "breed" and create a baby version mix and mash of the procedurally generated parents which then grow. Unique parents cant breed unless same species. (another possibility is that mother poptop babies are poptops that grow into mother poptops). I've also forever wanted to ride a creature and fly it in the sky and such. Maybe add a saddle that lets you ride monsters?
thats the point, you can find the same pet as your bred one if you spend....alot of time searching for a planet which has the exact color and part combination. That was always the point of randomly generated monsters. to make more combinations to make more monsters. More parts = more monster combinations = more monsters. and i feel like too little parts makes it too repetitive.