Halo Reach IS Halo CE, Halo 2, Halo 3, ODST, and Halo Reach

Well lets begin

With all the customization, Forging, and game types available potientially we could change the game types to be like the old Halos.

But let me take it one step further…

With the title update there could be one play list that remains Halo Reach and another with the H3 mechanics, rank, etc.

I do not see how this would be Impossible, Difficult yes but hardly impossible.