I think it would be nice to be able to expand the RMB menu icons. The inner circle of icons (your favorites) could be swipe activated and all others could just be picked and ignored when swiping. (See image below for example.) I know you can hold "ctrl" for more icons and that's fine, I just think it would be a good option to expand the first menu.
Added bonus...This would keep me from having to remove my chin from my hand to hit "ctrl".