Who is this theoretical full time 3B? If you can get a real one, sure, but that's a lot easier said than done. You also have bench spots to fill, and you might as well fill them with people who do something useful, like mash lefties and play multiple spots. The fact that somebody might not be a part of this team in 3 years is no reason to get rid of them today. You put the best players you have in 2012 on the 2012 team. There are really only 4 spots for infielders on a team. Castro is 1. Barney is 2, although I'd prefer he be the backup MI than starting 2B. Then, there are 2 spots leftover for DeWitt, Baker, LeMahieu, and Flaherty, with Vitters and Lake hopefully a few years away. My choice would be to give LeMa and Flaherty to opportunity to see what they can do for now and save 3-4 mil between both Baker and DeWitt. Baker could potentially stay on as he can also play 1B and a bit of outfield as well, and he does mash lefties where as the majority of the bench options (DeWitt, Flaherty, Colvin, LaHair, Campana) are lefites, so I guess that if it were to come down to Baker or DeWitt, that would give Baker a leg up but I'd just as soon see what we can get for him. Basically, there are 4 bench spots available beside the backup C. There will be a lot of guys competing for those jobs, unless 1 or 2 end up as starters which I'd really rather not see unless it's at 2nd.