Stupid ass washing machine...
In all honesty I would love to see a Halo: Marines.
I actually think the Marines are pretty damn awesome, I mean, yeah sure, they're god-damn useless in-game, but thats because they are 100% human and you're 150%.
But, like, we've had ODST, and they're just SpecOps marines, so how long do we have to wait until we can get H:M?
And as well as a whole new campaign and stuff, they could also include the Halo campaigns for all 3 games, possibly using a feature similar to the ghost-lap feature in PGR4 where you see Master Chief doing exactly what you did when you played as him, and then use it from a certain saved game. And they could link it up to LIVE and stuff so you can use ODST saved games and Reach saved games, too.
Definately something I'd like to see.