Looking at the WWE '12 videos (not impressed) I was thinking about the way a "grabble" was started and how this has always been the same. You either use a strike/non-grabble attack or a grabble and then choose one of the slots. What about an additional "layer" in this? Decide what part of the body you want to attack (left arm, right arm, head, torso, left leg, right leg, head), then choose the attack (strike or gabble) with the modifier. This would enable way more slots (e.g. strike, strong strike, grabble, string gabble (4), front and behind [maybe even from the side] (times 2), at least 4 modifiers = at least 32 slots per body part), though making the move sets more realistic and less limited and also gives you the change to really attack a specific body part without pulling off the same move all the time.
I also recognized, that a grabble will always happen from behind when the opponent is dazed. Should be more realistic and based on the position and the character should not turn around too fast.