Thing is, these are one of the rare game series that probably wouldn't really benefit. Even to this day, if you go back and play them on the 360, they still look absolutely stunning and weren't really held back at all by the limited hardware purely because the artstyle carried it through. The frame rates were rock solid at 30fps and everything did (and still does) look really nice. Apart from the people who didn't play them, I'm not sure what a remaster would offer.
PREDICTIONS FOR END OF 2015: (Made Jan 1st 2015)
PS4 - 34M - XB1 - 21m - WII U -12M