As a veteran graphic designer, I found the STAGER a complementary and special tool, there are some improvements I can offer:
It would be worthwhile to add a button that turns on and off global lighting in the top bar, so that we can easily switch from "work" mode to ray tracing mode and we can see the result of the manual lighting without the effect of global lighting.
It's a bit strange that the cameras appear together with the layers, and their lock also appears there. It was recommended to switch, configure and lock cameras in the already existing menu of the cameras in the top bar.
Lighting object display
In ray tracing mode it would be better to have an option to hide the object of the lighting in the scene, because they are annoying when you want to see the result (and turning off the eye in layers, it 'turns off' the lighting itself and not just the object and lines).
A critical tool that is missing in the software, both in models and in UV'S
Camera 'through' walls
A tool that is sorely lacking in the software, is setting up a camera without changing its physical location, but that we can define the point from which it begins to display (exists in other software). This way you can render a room out of a hallway for example, without the walls obscuring the interior of the room.
Select layers to import
When importing a model, there will be an option to select the layers I want to import.