Something I've been experimenting with loosely but not enough to reach a conclusion.
A lot of times when I have someone cornered near ledge, if I jab their shield, I've been trying to go directly into pivot bair (spaced). This is pretty damn safe, I just don't know exactly how safe.
The bair is near-fp on his shield, then near-fp fastfalled for the AC. Then, I'll immediately pivot retreating uair scoop them.
So, jab, bair, uair.
If anything hits them they are offstage, and although there are punishable holes in this (how big??) I think it's good. Imagine the aerials spaced well. They seem to hit right when ppl tend to drop their shield (bair catches their punish attempt after shielding your jab). If they shield it all, remember the uair is retreating and you can dj after.
^^ ANYONE BORED 20XX TEST THIS PLEEEZ
*** and if they get used to instant uair after the AC bair, AC bair to grab them.