Cabrera?? At minimum you would need to part ways with Webb and Owings, as well as top farm system talent... just for starters...
Actually Joe, the reason the Marlins are talking of trading Cabrera to begin with is the fact that he's quickly going to become "too expensive" of a commodity for the Marlins to keep. No way in hell they'd take someone like Webb back, because of the same reasons-- his $$$. The Marlins run very much like what I define as a AAAA team-- the ultimate breeding ground for players to prove it on the big league level before they subsequently are moved on somewhere else and players they get back continue the cycle.
I see them asking for Young or Upton, Montero, probably Quentin and a prospect or two for Cabrera. Think the package Boston gave up for Beckett and there's somewhat of an idea what you can expect Florida to ask for any Cabrera talks.
As for Cabrera's weight, I'm probably the only one here who thinks it's a non-factor. I think of several players who are hardly body builders (Prince Fielder sits at 6-2, 265 and trust me that's not 265 of solid muscle). I think Cabrera would be a huge asset to the Diamondback organization and I'd not hesitate for one second if the Marlins offered him up to Arizona for some package of the "young guns". Let's think of it this way.. He's 24, slightly older than Jackson and Young, the same age as Drew and Montero; younger than Quentin.
Difference is, Cabrera has World Series experience, has SEVERAL 30 home run seasons under his belt (he's got 121 homers, almost 500 RBIs and a career batting average of .312). He's an ESTABLISHED All Star, whereas the afforementioned names are still trying to grow in to their major league capabilities.
As for his "weight", he's 6'4; 242 pounds now. Not exactly a bad weight to be carrying with his size.. When he gets to David Wells, Rich Garces weights, then I'll be concerned. Until then, I think his weight issue is exaggerated horrendously.
Regarding the topic at hand, I simply shake my head in disgust. It seems like this organization doesn't seem to have a damn clue what to do with Jackson. Yes, his 1B defense is atrocious. No arguments. But the more you continue to shuffle his positions, the more the guy's gonna have to continue to adjust in the field, which in turn is going to cause his biggest strength (his bat) to diminish.
The big problem with this team is this-- they've more or less six of the same player: a slap ball, pull hitter with 20-25 homer a year power. They lack a true leadoff man, they lack a true cleanup, power bat.