What is the stance on the UFC bringing over Gegard Mousasi or Rafael Cavalcante once their contracts are up with Strikeforce? While neither is an immediate contender for Jones, they both would permit the UFC to have new match-ups. In addition, with Tito, Rampage, and even Franklin and Forrest on their way out of the UFC, there needs to be fresh blood for the division.
I am surprised there has yet to be an Ultimate Fighter that features the Light-Heavyweight Division since 2008. Here's a list of fighters still employed with the UFC after debuting on TUF.
From Season 1: Leben, Griffin, Bonnar, and Swick (kind of)
From Season 3: Bisping (and Hamill, before Jones retired him)
From Season 5: Bader, Kingsbury, Lawlor, Sosznyski (may be retired)
There's also Rashad Evans, who debuted at Heavyweight, that fights within the LHW division.
Divisional breakdown on TUF since 2005, with FW and BW being introduced in 2010
Middleweight: 6 times
Lightweight: 5 times
Welterweight: 5 times
Light-Heavyweight: 3 times
Heavyweight: 2 times
Featherweight: 2 times
Bantamweight: 1 time