@OP:
Good points, and I'd add also that hardcore gamers should be happy about success of both WM Plus and PS Move, as they are motion controls suitable also for hardcore games, not only for casual ones. What WiiMote lacked for some hardcore uses, both WM Plus and PS move (and now WiiMote Plus too) deliver. Thanks to them, also hardcore gaming will be able to benefit from motion control, instead of risking to be left behind.