[philso]

Something else to consider is the ability to disengage from the RC quickly afterward. I recall seeing some matches (I don't recall which team and where now) where the robot spent precious seconds dragging one or more RC's around, twisting and turning, trying to get them to disengage so they are available to be scored and so the robot can get on with stacking.

Lastly, many RC grabbers drag the RC's off the step and leave them on their sides. Unfortunately, many robots cannot score the RC's when they are on their side. Some can take RC's laying on their side and get them upright but that takes yet more time.