As ever, just a suggestion, but a very simple cutting tool might be very useful.
I know we already have a plethora of excellent cutting tools – Cut and extend (U), Chamfer (UU), Fillet (UUU), Cutting tool (MM), Action >> Cut lines with object, Action >> Cut lines with lines, and finally, Action >> Divide (⌃D) – so there is plenty of choice

But a straightforward tool – like a pair of scissors – which would simply cut a line where you positioned it and clicked would be very useful as well (I think, anyway!).
Cheers –– George