I've found that when returning to stage, you can use the new boost of the Up-B to do some interesting things.
For Example: Imagine yourself full double jump diagonally away from Pokemon Stadium 2's ledge, and your opponent is standing on the ledge (Not holding edge) in order to hit you away and seal the deal. I've found I can do the double jump towards ledge, do either UAIr NAir, Bair, or Side Special (which is effective by situation, but guarantees you won't be interrupted in the next step) and the attack will end in time for your newly buffed Up-B to just barely grab the ledge) The side special one is fun, since people don't expect it, and they are left unable to edge guard you when effective.
Also, when recovering from the top left or right of a map, you can throw a Fair to deflect someone chasing you, and have a much better chance of returning safely.