So C3 auto-generates the spritesheets, but that doesn't help people that want to CREATE and USE spritesheets in their projects.
I wanted to be able to create my spritesheets in a paint program and import that sheet, because then I could just edit the sheet in the program more easily to redraw parts if necessary, etc. That way I can just work on one image file instead of have to split it up into different images and import each one.
So this auto-generating spritesheet doesn't help in the PROCESS, because the process in C3 is still the same (you haven't shown otherwise), and the way it sounds is it just generates it in editor so that you can see the final output and also save on image quantity when exported (again, this doesn't change or improve the process of creating a project).
Can we at least gain the ability to USE spritesheets in the editor???