We're going to need a thread for a topic that is basically painful to discuss but it needs to be mentioned...
We need to test which characters can recover to the stage after being carried over the edge by flying slam.
And it gets worse, because different stages are different heights, meaning that every single legal stage could have a completely different spread regarding which characters can make it back to the stage and which cannot.
We have characters like Villager, Isabelle, D3, etc. who are basically guaranteed to make it back regardless of stage choice, but other characters like Sheik, ZSS, etc. can make it back to some stages after being Bowsercided, but not all of them.
So yeah, I'd test this in my free time, but I don't have much free time to speak of. :\