Ghost Busting Hitmonchan
Gives it a way to hit Ghosts, though it has to give up one of its other coverage moves.
Funnily enough, I was playing NU today and was up against a Regice and Golurk with my AV Hitmonchan. Golurk switches in on Drain Punch, while Regice switches in on Ice Punch. If I had Shadow Punch, then his Regice switch would be worse and it would still hurt Golurk if he stayed in.
Close Combat Combusken
YES
YES
YES
ALL THE WAY, YES.
An accurate, and powerful STAB attack on something that can't get burned? YES!
And, because of the Baton Pass ban, you don't have to worry about Baton Passing the Defense drops (in NU).
Prankster Weezing
Would be great, as Weezing has a ton of moves to use with Prankster, like:
Taunt
Destiny Bond
Will-O-Wisp
Thunder Wave
Toxic
Toxic Spikes
Pain Split
and more, I think.
The only problem is that it loses it's great Ground immunity and now it's weak to it
Earthquake Rapidash
KOes stuff that Drill Run couldn't normally KO... yup....
Calm Mind Samurott
Suicune's less bulky cousin. Helps Samurott set up with it's nice SpAtk stat and can now be run like a Suicune. And now I have a reason to consider running Air Slash for lols
My nomination: Linoone + Magic Guard/Bounce
This doesn't look like it makes much sense, but let me explain.
With Magic Guard, Linone can switch in on Rocks or Spikes and get up a Belly Drum safer-ly. It also won't take any damage from Toxic, which prevents it from being burned.
With Magic Bounce, Linoone doesn't fear Weezing's Will-O-Wisp or Ferroseed's Thunder Wave and can be used for supporting the rest of the team.