Hi there, you can voice your support for this feature in This Topic which asks for exactly what you want.
I also agree that this would be a insanely useful feature.
In the meantime, what I en up doing if iterating only to enhance print quality is isolating a part of a model and print only that, at the same orientation that this geometry would be in the full model. For bit parts this reduced setup time as you don’t have as much supports and tweaking to do.