As others have said, Dan Haystead is the unluckiest player not to have been offered terms. Additionally, I thought Adam Boyes (17 league appearances, 6 goals) just about deserved an offer, perhaps in front of Marc Newsham (24 league appearances, 4 goals). I wouldn't have thought geography or wanting full-time football would have been factors in the Boyes decision, as otherwise Anthony Church wouldn't have been offered anything.
Haystead, Boyes and possibly Newsham aside, you can't really argue with the decisions.
Incidentally, are any of the reserve team players (Mickey Stones, etc) being offered first team contracts?