Question regarding these:
What's the biggest animal/thing they've morphed into? And does that mean there'd be a limit? Users have enforced size limits on other things in the past, so I'd suggest sorting this issue before the league starts.
For instance, I had Doctor Strange make large portals in the last league. At the time, Strange even had the One Ring AND Elder Wand, which I argued would increase his ability to make larger portals, but that was deemed unreasonable.
Therefore, if the Animorph characters have never transformed into Godzilla-sized creatures before, I'd expect they couldn't do it in the league. Correct?