The power of wild shape/shapechange focused builds is one of those things that always feels like a really easy path to power and versatility, and also something I never want to touch with a 10 ft pole. If someone enjoys it, good for them, but I have enough trouble building one sheet for figuring out how all my stuff combines into combat stats. Even if you've only got a dozen forms you ever take, that's a dozen sheets you probably need to make just to keep track of how items/buff spells/shapechange stats are stacking. That sounds exhausting.
EDIT: And ofc if you find yourself in a situation where you need to use something other than one of your standard forms, time for a new sheet!