We could definetly make it to some extent.
The question it, at what cost?
It would be a HUGE amount of work to make each model (let's say berry paw) for each skin type.
Also for new genes we'd always need let's say 5 times as many models as before.
Then the question is: Is it cooler to have 5 new genes, each with unique mechanics or one new gene (but with 5 different skin types).
I'm all over the idea of skin types, but I'm just not sure how to do it without adding a big draw back to adding new stuff ^^