I would like to use different sizes of GUI because I can't exceed 80% on a MacBookPro 15 when I use Unify with Vienna Ensemble Pro but I use 100 % in stand alone mode.
But as Unify remembers only one setting, I have to change it each time, depending if I use stand alone or VIP plug-in.
A little inconvenience but...
Could you put copies of the vst dll in two folders, and point each application to a different one??? Would that work?