Beasley has talent. The comparisons are always easy to refute. He's not Rasheed, he's not Z-Bo, well every guy is different. Last year with MIN yeah he was inefficient but he did score 31 points per 48 minutes when he played the 4. Maybe he shouldn't be shooting that much, but there still are only a handful of guys in the league who can do that. He's 23 and could still come around. All that said, we'd obviously be buying low.
Not that I think it's likely, but suppose we did Pierce + Rondo (as mentioned in another thread) plus draft picks for Howard. Pick up Beasley for O'Neal and a small asset. Probably swing a deal for an extra guard to "replace" Rondo at least for depth. Bradley and Howard could have an interesting effect - Avery has shown he's one of the best in the league at full court pressure and shortening the shot clock. Then once you get into your sets, you have Garnett and Howard waiting...
Bradley / Dooling
Allen /

/ Moore
Beasley / Pietrus
Garnett / Bass / Beasley
Howard / Bass
Then in the offseason we have pretty much the ENTIRE cap (~$52M) to spend on a maxed-out deal for Howard + D-Will, and enough to still sign something like Garnett, Green, Beasley, Allen (pick 3?). For example we could start with this and have money left to spend:
Deron Williams
Avery Bradley
Jeff Green
Kevin Garnett / JaJuan Johnson
Dwight Howard