Would it be possible to make an addon that can apply UI scale to only certain things at a time?

Before the prepatch, I used to play on 1 scaling for the size it makes action bars, but now at 1 it makes every thing else way too big. Would it be possible if someone had the know how to make it so they can control the size of, say, the ESC menu, Warband Character List, and Action Bars independent of one another?

edit: an addon called moveany made the escape menu smaller but doesnt seem to be a way to make the character list smaller

Addons don’t run on the character select screen.