Previous Button Layouts for Halo: CEA???

I have a question. Will 343i possibly include previous button layouts from past Halos into Halo:CEA? For example; in Halo: Reach, the default controls for that game I thought was the best button layout (IMO) so it would be really awesome to keep on playing on that control scheme so I wouldnt have to try to memorize 2 layouts by switching between the two games. Halo: CEA could have the default Halo 3 scheme as well for those players, bumper jumper, recon, walkie talkie, etc. Is 343i planning on doing this?

Yes, I would love to see

Noble (Reach’s Default)
Recon (H3 default)
Bumper Jumper (H3, Reach’s)

Something I don’t quite understand is why can’t there just be custom button settings? I always use Green Thumb in every game because I like Melee being right stick. But then over some games “change grenade” and “zoom” in particular kept being changed around. Halo CE on PC allowed for custom keys.