So, assuming for a moment they continue the hero/villain 2 packs for a 2nd MVC wave, and they stick to the 2nd MVC (before it went 3d), the villains left are Marrow, Sabretooth, Spiral, Sentinel, Magneto, Dr Doom and Blackheart. Marrow, Spiral, and Sabretooth all have recent comic figures so they might steer clear of those. Magento has an X-Men 97 figure but I could easily see them doing him again with a beefier body a-la the new Cap (and I'd grab that), Doom is getting a re-release of his classic version, but maybe they'd try to strike while the iron is hot around Doomsday. Blackheart would be a way for folks who didn't get the BAF to pick it up, but that would be a fast turnaround.
Sentinel though, Sentinel is the only villain named in that interview, and I sincerely hope is what's coming. I love that design and he'd make a great deluxe like Juggy and Shuma. Day 1 preorder for me. My sentinel factory needs a bruiser.
Also, correct me if I'm wrong, but wasn't there a sentinel rumor on a couple of these leak lists?