What is negative ease?
Abby to answer your question, I remake almost every pattern I ever use for myself. As guide I use an old Passap book with tons of basic patterns for every size and gauge. They list MY kind of pattern, for my body as for "stout" women. Boo Hoo.
It really amounts to short row darts for extra bust ease. That way I can avoid those HORRID dropped shoulders, or shoulders in which the shaping is too wide.
If the shaping is really weird, I try to give myself an extra 1" on each side & find someway to try and get that "dart" in there. I really hate it when I put all that work in a sweater and it is too short in front.