In my opinion I wouldn’t mind a movement system like Halo reach where you can have different armor abilities but it is not necessary so you can have modes that satisfy the classic players with no abilities and then the casual players with the various armor abilities. Also armor abilities allow for some neat things with forge maps and custom games because with no abilities custom games would be sort of limited in how you could design them but with these optional abilities you could really design how you want and choose how you want it to play. Another interesting thing would be to bring back the equipment from Halo 3 because that would change up the matches and also allow for some pretty cool things with custom games too. I just think that this approach could satisfy all of the different types of players and not single out a group based on how they feel with movement (unless of course they want a COD advanced warfare type movement, then that’s a no)
This has been brought up during the past discussions, for me I think we should and I think Infinite will do is have a new set of gameplay that like you said works with old and new fans.