Yes, I would. I love Cabrera, but I still wonder if Hamilton (had to think about that name for a second...) will be able to play a full season very often. Braun is an upgrade over Josh, and Longoria might be a slight downgrade from Cabrera, but they're very close, especially with 3b position eligibility for Longoria. I'd do that trade.
With Manny and Sizemore included -- I think that hurts you this year, but if your team needs steals, it could be good for next year. Depends how you want to balance those objectives.
I would take that trade without question. I think Hamilton was a flash in the pan - he'll be a serviceable fantasy starter in the future, but not like Braun. And I'd actually take Longoria over Miggy in a keeper league, so I think you're coming out on top all around. And if you could somehow get Sizemore for Manny in a keeper league, you'd be set for the next couple years. Pull the trigger.
Huge Cabrera fan here but I'd jump on the Longoria Braun side of this trade.
61* 70**73**762*** MVP****AL07,AL05,NL04,ALNL03,ALNL02,NL01,ALNL00,AL99,ALNL98,ALNL96 RIP Cammi Cmon Bud NOW is the time to sack up and force feed an Olympic style drug testing program down Fehr's fat throat and save OUR game from these blatant cheaters!