You don't package multiple picks to move up often in the NBA, not unless you're moving up only a few spots.
In this draft I'd be shocked if anything like that happened. Maybe if the C's had 5 they could go to 3. Sort of like the Kevin Love/Mayo deal. The team having the third pick would want to draft "Kevin Love" (say Exum) but see the chance to trade down 2 spots and still get him.