First things to keep in mind when shaping this roster is a players age and whether or not they are a free agent next year. Currently, the Patriots have 24 players heading into Unrestricted Free Agency next year. They also have 2 players entering Restricted Free Agency and another 7 under Exclusive Rights Free Agency. That is an extraordinary amount. Usually a player will play well going into his Free Agent year. But the thought of losing half your roster is outrageous.
Injuries in pre-season and post 6/1 cuts (salary cap savings) will play a big factor in determining the roster.