I would definitely keep Dillon, but expect a few games where he doesn't put up good numbers. NE seems to adapt on offense as well as any team, and if their opponent is stacking the line to stop the run, NE will be perfectly content to rely on Brady's arm. However, when the weather gets bad (FF playoffs?) I expect NE to rely on Dillon heavily, making him a very valuable player.
Vengeance is mine.