Some pretty compelling articles today: http://espn.go.com/blog/truehoop/post/_/id/48187/no-such-thing-as-a-tweener-anymore and a slightly different take http://bleacherreport.com/articles/1266628-on-positional-tweeners-and-a-brave-new-world
Left unsaid in both articles (dramatic sigh), the best part about Sap playing the 3 is that it allows Derrick Favors to play the 4. Sap simply cannot play the 4 when Al plays the 5 (and vice versa ldo) from a defensive standpoint, this is a plucked clean horse corpse at this point.
That said I think Sap is a better 3 than Burks would be a 1. I beat the drum as loud as anyone, and he'd certainly be a better 1 than Watson, Tinsley or Price. But he's not a 1. He's not mentally wired that way and the role doesn't maximize his skillset. At his best he's a long slashing 2 with great body control whose well-above average at rebounds, assists & esp getting to the line.
Regardless, I'm positive if the Jazz had any plans to play him at 1 they'd have given him serious time at in Orlando and they didn't.
We're going to eventually live & die with Kanter-Fav-G-Burks-X at 5-4-3-2-1, with some varying roles depending on situation, and I'm more than OK with that.