Not gonna lie, having Y instead of B for specials throws me off something fierce, but otherwise the game plays best on a standard Switch controller setup, I think.
About the leak.
Honestly, people knowing about Garfield ahead of time will be helpful for publicity and the devs' livelihood. At least he's not from a more divisive property like Sanjay and Craig. Plus there'd be meme nostalgia for Cartoon All-Stars to the Rescue.
Now I really want to see if they announce the bonus characters this week.
Also, I could understand assigning Shredder to the Double Dare stage, since I believe that he used ooze-based devices in 87 TMNT.