One thing I miss from numerous other 3d programs is the RMB orbit. In Fusion the RMB is for gestures. I find these far less useful than being able to quickly rotate around my scenes to access what I want to see and work on. In my ideal universe this would be a switchable option in prefs. Right-click to get menus, hold to orbit.
Having all screen navigation with only the mouse is one thing I really love. MMB Pan, Scroll to zoom and RMB to orbit.