I think Orlando has to own up to the fact that they are partly responsible for this mess. They could have traded Dwight during last season or before last season when they had far more leverage. Also, they have to own up to the fact that they had Dwight as the centerpiece of their franchise and they screwed up not building a contender around him. Yes, they had Otis Smith, which is a horrible handicap...but still.
In my opinion, I see 2 teams that can take Dwight on a 1-year rental and make it worthwhile:
1) LA Lakers
2) OKC Thunder
The Lakers are obviously the best fit for Dwight. They have best single player replacement (Bynum) and the nucleus that is built to win a championship tomorrow. I am not sure how the whole trade works out, but Nash-Kobe-Howard with probably Gasol is an absolute nightmare for the league. That team is the favorite to win the Finals.
Further, it is best fit for Dwight because it puts him under the spotlight and under pressure. In Orlando, and also in Brooklyn, that would not be the case. It will prove once and for all whether this guy has what it takes to bring home a ring. If he can't do it with Kobe and Nash on his squad, he sure as hell aint gonna do it with Deron Williams and Joe Johnson.
However...the more interesting place is OKC. As a poster mentioned above, OKC might actually have the best overall package for Orlando. Orlando can resign Ibaka and Harden long term as pieces to build around. (Not sure if they could amnesty Perk but if they can they will.)
In OKC, Durant is clearly the best player, unlike in LA where Kobe is the alpha dog but Dwight would be by far the most talented guy on the squad. Dwight would be such a huge upgrade for them offensively in the post where OKC has literally nothing in Perk and Ibaka. Again, this team is probably a favorite for a title, though I think less so than LA only because Gasol is that good.
I think Dwight has to realized that he is not going to Brooklyn. He is not getting traded for Brook Lopez. That cannot happen if this league is to maintain any credibility.