Personally I'd rather someone else...
Springer maybe or
Blurr?
If I had to choose either Arcee or UM, I'd have to go with option 1, Arcee since IA have already confirmed an Ultra Magnus statue:
Edit: Also I guess this means we aren't getting a solo Devastator statue in scale with the others? Will we get an Omega Supreme Diorama? A Devastator vs Omega would be pretty awesome...
or VS the Dinobots?