Millar, like Adam Stern, is wasting space that could be filled by Kevin Youkilis.
Stern is supposed to be the designated runner and I have seen him screw up three times costing them outs. Millar might be good in the club house but his power has left him. Yes, he can draw walks but that should be getting him better pitches to hit and he's just not getting the job done. Youkilis is not a first baseman and he's also not the hitter or defender that Bill Mueller is. He is still young and needs to play so expect him next year.
I think that the Sox will be solid for years to come with the pitching that they have in the minors.