No doubt about it, it has to be Maryse. She's the dominant diva in the WWE today, with or without Melina.
You're right with the rest of your post but I disagree with you on this point. Perhaps Maryse is the dominant Diva on Raw but not in the entire WWE Don't get me wrong, I like her and she's one of my faves but Divas like Beth or Katie have a lot more experience in the ring,