Regarding the footstool changes suggested a couple pages back by Kupo, maybe some characters would have large footstool hitboxes, some may footstool spike, some may have a very small footstool hitbox (High tier fox, falco, jiggly), some may not even have a footstool. Footstool out of air dodge?
It could be a mechanic restricted and buffed to certain characters playstyles.
Characters who have poor offstage games or don't recover wellcould use a bolstered footstool to balance the match up and make it more interesting.
The removal of footstools from certain characters could make the gameplay vs characters who have footstools pretty interesting- especially edgeguarding. This would be another tool to be aware of how to use and how to combat effectively in matches.
Mario with a nicer footstool would be a tribute to his classic 2D scrollers and would help his recovery and edgeguarding (Mario's edgeguarding in Melee is fine though).