Has that honestly not been in the series yet? If not, that's just embarrassing.
I don't know if it was ever in the series, but it wasn't in the last game, and I don't recall being able to crawl while in certain submissions being introduced till recently, you couldn't in RvSD 2011 which left your character tapping out to moves after 5 minutes of sitting next to the rope.
I already mentioned custom main menu music, another thing I hope we could see, is custom music during matches. So it'd give it the old school wrestling video game feel(back in the days before commentary was in wrestling games,you'd just have background music playing during matches).
lol, sometimes I even play WWE13 with no commentary, and just play DOR2 song during the match(since that was played during actual DOR2 matches).