I think it would be nice if we could customize our 360 controller layout. Like RTCW on the OG Xbox was.

i believe all button configurations on all platforms are customizable.
i also think it's in the compendium

If I remember correctly, they said that they had a "Cod like standard configuration" and they were working on making all controls customizable.

This is what the compendium says:

"Controls will be modeled closely to Call of Duty controls by default, but fully customizable controls should be available."

i'd say they have the time to do it, and it seems like such a small but rather important thing, i seriously doubt they'd cut it

Yes, it should be implemented, gives it more a personal feeling when you kill people with your own button layout.