I am convinced that Batum and Biedrins, with the rest of that team led by Rondo, could make noise in the playoffs. That being said, Let's remove Batum from the equation for a moment and restructure the GSW-BOS side of things.
1. Re-route Biedrins+ to NOH for Emeka Okafor
Personally, I think that Biedrins is better than Okafor if only for his better contract.
Career numbers below:
Player - 2013 - TS% - eFG% - OR% - DR% - Blk%
Okafor - 13.64 - .540 - .517_ - 11.9 - 24.9 - 4.2
Biedrins - 9.00 - .594 - .596_ - 11.9 - 24.6 - 3.7
Okafor costs $10.28M more than Biedrins over the life of their respective contracts. Even if they were completely equal players for the role needed, you go with the cheaper ($4.64M savings in 2013, $5.64 in 2014) and younger (3.5 years) player. Some might say that Okafor is the better offensive player and I say that they both should only be used in transition, on dump-offs and very few pick-and-rolls. If anything, Biedrins is the better finisher.
2. So you don't want to give up draft picks and/or you don't want to pay out money for Batum. The reason I constructed this the way I did was that we would use our Bird Rights to re-sign Batum because we would still have Allen and Garnett (possibly combined with 2013 and 2015 1st RD picks) left in the chamber and those could be used to acquire a salary dump + high level assets, if need be. I would just as soon allow Allen to ride off into the sunset. I don't think that Garnett is going to suit up next year unless it is for the Celtics and only if they are competing for a Championship.
Additionally, if you try to get cutesy and play games in FA by offering him a low contract, Portland will match.
What other scoring wings could we reasonably acquire who have size, length, athleticism, positional versatility, outside shot, proven ability to use heavy possessions without turning it over and a history of efficient play? How many of them are likely available? How many of them could be paired with Rondo in an uptempo offense?
Lastly, you guys didn't allow for the 2013 off-season. That is where I poach James Harden to be a maximum contract to be the all-around wing that blends everything together.
Bench: Bradley, O. Johnson, Thompson, Mbakwe, J. Tyler
Other assets: 2013 1st RD (possibly going in Batum deal) and two 2013 2nd RD (BOS and MIN via CLE)