IF you could pick 1 character from an alternate reality...

[dzub]

Namor from Earth X

[SuperiorIronman]

I still need to read the sequel but I really liked Earth X Reed Richards. Granted I didn't read the sequel but I was absolutely sold on the struggles of an aging Mister Fantastic.

[Tiamatty]

I'm gonna say Nocturne, of the Exiles. She was cool. And I miss the Exiles.

[vitaminbee]

I really liked the idea of Elektra taking over Daredevil's mantle in the Civil War (32323 Universe). She was BARELY in it but it seemed like a cool idea. And the outfit looked great.

[dzub]

I still need to read the sequel but I really liked Earth X Reed Richards. Granted I didn't read the sequel but I was absolutely sold on the struggles of an aging Mister Fantastic.

Sequels is'nt as good IMO
I would love Earth X Mr Fantastic too

[Marvel Forever]

Hands down I would pick Sorba Rutskaya, the Ultimate Red Ghost, and a female one at that to battle Susan Storm!

[Wolverine12]

Ultimate Wolverine (Logan). He is my favorite version of Wolverine. For the most part I felt like he was always written as how a person who lived through Weapon X would actually act after they escaped.

[Agent of Wolfram & Hart]

I vote Earth-295 (Age of Apocalypse) Sabretooth, 616 Sabretooth could go back to being the vicious killer he used to be, wile AOA Sabretooth could take his place in a heroic role. I'd love to see an eventual knockdown drag out fight between an uninverted 616 Sabretooth and AOA Sabretooth, they are distinctly different characters

[Michael Watkins]

Hands down I would pick Sorba Rutskaya, the Ultimate Red Ghost, and a female one at that to battle Susan Storm!

hmmm. I kind of preferred Ultimate Mad Thinker. she was twisted. Sorba seems like she could already have a 616 counterpart that we haven't seen yet.

[Michael Watkins]

There have been some wonderful Thor variants, but it's already a crowded title atm, so I'll keep it simple:

Bring back Banner. Heck we just saw him in generations. That'll do.

an alternate version of Banner?

[Michael Watkins]

Advanced comic book machinery ALWAYS wins!

technically, Ultron is advanced comic book machinery.

[davew128]

an alternate version of Banner?

Is currently appearing in Old Man Logan as the Maestro.

[Mike_Murdock]

I've said it before and I'll probably say it again: Ultimate Kitty Pryde. The X-Men are used to both younger alternate versions of themselves showing up and people from dystopian realities being there so she'd fit right in and she's just a very cool character.