While I'm hoping an official puppy predictor is in the works, a simple improvement to the current breeding page would be hugely helpful in the meantime:
When we are selecting parents and the Potential Offspring show up, we currently can't select wolves that are on breeding cooldown or are listed for sale in the FM. It make sense that we can't breed those, but a lot of the time I need to see what puppies would look like. I would like the text indicator below such wolves to still exist as that is useful information, but I would like the ability to Select them in the breeding menu and preview offspring at this point even if completing a breeding would not be possible. If we were to click Start Breeding, then an error could pop up saying why we can't actually breed it.
An actual puppy predictor would probably invalidate the need for this, but I don't know how far along that is if we're getting one. Figured I'd put this suggestion out here in the meantime.