Not sure what category to put this in, please feel free to organize as needed.
I have noticed that when using a selection to insert multi-cursors, it adds one additional line, which is counter intuitive and is probably a point of friction for the user (at least for me). I made a quick screen capture illustrating the problem:
As you can see, I always need to select one fewer lines than I actually want a cursor on. Are there any work-arounds to this? Thanks!