Let's be honest here, VGU's have become the thing I look forward the most, especially since most of the recent ones have become champions I thoroughly enjoy playing. Not to mention all the cool Lore and art we get from VGU's.^ ^
Possibly the Morgana and Kayle dual updates, since these current vgu's seem to land relatively close to each other.
If not Mordekaiser, then it's going to be either Pantheon, Irelia, or Akali, then Swain.
FOR THE LOVE OF GOD REWORK TRYNDAMERE
If it wasn't for 
I'd vote 
, but from history's trend it'll probably be neither. :(
They seem to be hopping from faction to faction and they have a Noxian 
and a shadow Isles champ 
in production right now.
The real question is whether they're comfortable doing two champs from the same faction after one another. With what's left it may become difficult to keep alternating the moods between champs. There's some pretty angry ones left.
Ionia: 
Void: 
Shurima: 
Noxus:
Freljord: 
???/wandering: 
Zaun: 
Piltover: 
?
Demacia: 
?
^probably missing a few; left the divers mostly out 
since we don't know what'll happen in the fall class update if they chose divers..
Mordekaiser and skarner will be next, i'm sure of it
there are so many champions that needs a VGU but we get 4 vgu per years it's really sad tbh
and ryze being among them is even worse
-gH
Nunu for the love of god please.
His model is ugh, his kit is a balance nightmare and whenever I get him in ARAM the VO destroys my ears.
Pantheon, Irelia (though to be fair she could get away with just a VU, but I think a lot of people would prefer VGU),Mundo, Swain and Cho'Gath are also good candidates.
Mordekaiser kind of needs one too, but they kind of reworked him recently(ish) so I don't know if they want to touch him again.
Unless he becomes the next Ryze.
I'm hoping for Mordekaiser next. He really need some loving.
And then a joint rework of Kayle and Morgana.
Exactly! VGU news is the best news. I wish they could get a third team on it :(
My money is on and being next
EDIT: But I hope/wish for 
Well, they/Reav3 said that the two teams are already exploring the next couple of champions to get a VGU.
I think it'd be Nunu and Mordekaiser or Pantheon. They all seem like the strongest candidates to me- With Nunu being the most outdated (IMO) and both Mordekaiser and Pantheon are sort of like Warwick's case, with them having a ton of untapped potential in their ideal archetype (Death Knight and God of War) and being fairly outdated (while also being a bit of a design/gameplay mess).
-_-
Personally? I really want it to be Nunu and Mundo first (Sorry MM :P), though, honestly. I've been craving for a Nunu VU (and now a VGU) since about 2013 and I feel like Mundo has a ton of potential and could be super cool with all new and modern art, design and VO that would match his new bio and story (which I really enjoyed).
But again, I wouldn't be opposed to a Mordekaiser VGU instead of the Madman of Zaun.
looks at Ryze
Yeah.
Lowkey I want them to pick Teemo and Shaco Both of them are extremely frustrating to play against and both their kits are kind of.. toxic in general
I would rather have VGU and reworks to older champions than have new champions (or atleast release a new champion every few months)...
If I really had to guess, I'd say somewhat between & (maybe even the duo rework)
"When can the boards get more reworks to complain about?"
PLEASE RIOT REWORK THIS LITTLE TURD ALREADY
But tbh I see and happening next year.
The first two specifically. Their kits are just painful.
My money is on Swain and Mundo
