Hi Marco, I would like to add more kinds of solid editing tools in MoI in the future but I can't say for sure when they will happen. So I don't know if it would be for the next release of MoI - probably not if I had to guess right now.

For your steps the only other possibility that I can think of at the moment is if your main object is a solid you could try selecting everything and running the Boolean Merge command rather than retrimming it, that might be more convenient.

- Michael