It would be cool if you could freely transform the cages similar to Cinema 4D's FFD Transformer. So a cage with an adjustable grid structure, where the points would all be freely movable to transform everything freely. In addition, of course, a reset button so that everything has its default values again.
That would be a cool feature indeed. We are aware that the cage system inside Substance 3D Painter is presently pretty basic, and this is in fact one of our current focus.
As you can see in this video presentation, we are working on an automatic adaptive cage, but for now, if you have specific needs for a project, you'll have to create your own cage and import it in Substance Painter.