What would be the roster of a Xbox Smash brothers game?

[zullumaster]

I'm a bit bored, and been wondering who would be in a Microsoft smash bros style game. I've got a few ideas on who could be in it.

Master Chief
Arbiter
Diadect
Brute Cheiftan (can't rember his name)
Cortana (maybe)
Marcus Fenix
Raam
Cole
Hero from Fable
Jack of Blades
Reaver
Conker
Banjo and Kazooie
Joanna Dark

There are some other options as well from the Xbox live land.
Here are a few that may be a bit out there.
Arkantos for Age of Mythology
Bioware's games aren't Microsoft anymore, but they have a history
Commander Shepard
Revan
someone from Jade Empire
Hawke
there's probably some more, but those are the first few I've got.