Something like AntoniaA:

This is my grafty 2015-2021 model, but an 'official' version would sure be welcome.

I have been experimenting with A-poses for a while. I found that the grouping algorithms in Poser are not made for A-pose (and implementation lacks flexibility on T-pose), so fro PE and LF I made a grouping script for garment models. It uses a slicing method, so only makes the cuts one needs.  Sounds like time to add an Antonia cutting model.