People are suggesting cutting Maroney because he is towards the end of the depth chart. That being said, he can contribute to special teams (in kick return). Also, he actually costs the pats more cap room if they cut him then if he plays (1.77 million cap figure, 2.115 million cap hit if he is cut).
The problem the team faces is they cant really keep 5 rb's. Kevin Faulk is safe. Fred Taylor is safe. Then you have to decide between 2 of the 3 of (Maroney, Morris, Benjarvus). Morris has shown he can help, although he has been injured all year and has done nothing. Benjarvus has run very well, so you would assume the kid has a spot.
Reiss has all 5 making the team.