Some of you are still missing the point. Of course versatility is a good thing, and matchups is a huge part of the game. Jimmy offers the ability to play, and defend, multiple positions! However, you still have to put out a starting lineup. And I say Jimmy at SG is better for the Bulls. Look at it this way......
If we call Jimmy's main Position SF, then we'll be looking for another SG still, right? This makes us SMALLER as a team. Even though Jimmy has length and a crazy vertical, he's still only 6'7". I'd rather have that size at SG!!!!
Then, I'd like a 6'9" or 6'10" scoring machine that can defend at SF. This makes us BIGGER. WE NEED TO GET BIGGER AS A TEAM. Attacking the Heat with smaller guys does NOT give us an advantage. We need to attack them with SIZE!!!
We don't need more smaller G's, we need big men that can score and defend the rim. We will STILL be able to run small linups out there for matchup purposes with Jimmy at the SF position, but he would be a nitemare matchup at SG for other teams!!!!
It makes much much more sense to me to go with a Jimmy Butler/Josh Smith type of duo rather then a Jimmy Butler/JR Smith duo.