I don't think this has been discussed before (at any length, anyway), but I think Milton Bradley could really be the best way to solve the Cubs' lack of left-handed hitting.
I had hoped that the Cubs could trade Lee and sign Adam Dunn to play first base. Bruce Miles' reporting makes that sound unlikely. I'm pretty tired of Lee, but I guess he's not going anywhere.
As I see it, Bradley fits the Cubs very well. He's a switch-hitter who can place center or right. That might be very important given our right-handed-heavy lineup and Fukudome's struggles.
Bradley's two biggest drawbacks: injury history and behavior.
The Cubs are deep enough to absorb losing Bradley for a month, assuming it happens during the regular season AND it doesn't happen when one of the other big bats is also hurt. I, for one, am willing to take that risk, depending on the money needed to sign Bradley. And, actually, his injury history might make Bradley a slightly cheaper option.
As for his attitude, I'm willing to risk that, too. The Cubs have enough headliners where Bradley could (conceivably) slip under the radar. That's (essentially) what happened in Texas with Josh Hamilton's big year in '08. That's assuming Bradley doesn't have a Jacque Jones kind of start.
If memory serves, the Cubs considered Bradley a couple times during the Baker years. I think they should do so again.