There is an easy way to enforce a ban like that...but anyway.
I don't feel like there is a distinct need for it, really. I mean, it can stand to have double team and whatever strategy persist [although it's rather slower, you still can manipulate it.]
Sitting on Glalie, 80 Base speed isn't that great. If anything plans on being fast in that tier, it'll still decide to be faster than that if it's a sweeper or will just have bulk to take it's limited typings. I wouldn't be freaking out if I saw it run that particular ability, especially if it doesn't have much to do with it. Ice Beam is nice. But you don't have too much else.
Bidoof...seems like it's just tacked on because of the ability. Seriously...I don't think it's necessary.
Octillery is powerful, but really doesn't have speed or too great defenses. You'd be hurting before you could get going, I would think. That movepool is impressive and it'd be fearsome when it got going, but that's when it got going. It'd need time to gain the speed and evasion necessary. Not to mention it'd have to roll the right boosts in order to get there. It's your best shot, yeah, but your best shot is a long shot.
I don't think that tier should change.
Bibarel...I really don't think should be there. Moody doesn't even feel like it's best ability. I would rather just Curse under Simple and gain two attack and defense stages, and become something of a force than gain 2 special defense against the local fighting type. When it's between a controlled situation where you know what you're getting and have a chance, or an uncontrollable situation where you might not get anything...it's the same situation all the way around. It just doesn't feel like a random number is worth banning a Pokemon.
To me, it's like saying we'll ban Pokemon including Togepi because of Serene Grace.
But then again, hello Shaymin of the skys. I do miss you so.
My vote: wait it out until the script ban. Which I don't even really support anyway.
And to clear it up, Moody is the ONLY thing right now until that gets settled?
Side note.
*A note about Reborn's OU:
One of the greatest appeals of Reborn is that we do not follow Smogon tiering. Drizzle+SwiftSwim will not be banned here in the foreseeable future, and if it is (unlikely), SandStream+SandRush and Drought+Chlorophyll will go right along with it. Pokemon like Blaziken and Garchomp that have been banned by Smogon are probably not going to make it to Ubers here for the sake of preserving a (reasonably balanced) environment in which they can still be used. Shadow Tag Chandelure is another such case, but we have had an in depth discussion on it recently in which justification for its ban could not be logically resolved.
I know exactly why Smogon felt the way they did when they banned it...Just saying.