Latopazora
not sure if this was mentioned yet, but how about being able to craft some of the rare bugs from towns, like the great monarch butterfly? Tough and expensive to craft, but still obtainable.
I love this idea, because I've encountered that butterfly a total of once in my time here, way back years ago. And that little bug has inflated like no one's business.
Besides, we can already upgrade our fish to something higher up the scale. Should be fairly easy to tweak the bugs the same way. Preferably as a level two or level three formula, given that the formula the butterfly is an ingredient in is itself a level three item.