What are you basing that on? He's only lost to top 5 fighters for the most part. Gastelum aside he's only lost to the likes of Weidman, Souza and Mousasi..... So how is he more than washed up? In his faded state he's still a top 10 fighter with enough power and skill to trouble most guys in the division. Kennedy is a legit and MW powerhouse wrestler. He gave your man crush Romero hell, and was able to cause Gastelum some problems early on.
Weidman Vs Souza is a great stylistic matchup. Both want the fight on the ground, Souza wants to be on his back which is where Weidman wants him. Weidman Vs Anderson 3 is a great fight as well. Weidman, could he be the man to take down Whittaker? Or Bisping? He's well and truly back. Him vs Rockhold at this point is 50/50 imo.
Weidman might just be able to get Whittaker down with those herky jerky trips and odd angle single leg takedowns/ankle picks. Weidman while not of the wrestling pedigree of Romero, may very well be a better MMA grappler. At least as far as the complete package of wrestling/BJJ is concerned. Certainly favor him to beat Bisping, make him a slight underdog against Whittaker and Rockhold.
Belfort has fought the same his entire career. Watch his first loss to Couture. He just never learnt from it. He comes out swinging and either knocks his man out or he gasses. Only 5 of his victories are by decision. The amount of time for which he's a threat has clearly gone down now. but him on with Bisping again for a title shot and that first minute could see a new champion crowned.
He has as good a chance as any. Although you have to say when he isn't boiled down, his TDD defence is as proven as anyone's right now as he's faced the best Jits and the best Wrestler in his division.
I agree Jacare is the probably the best match for him next and I think he beats Bisping and everybody except Whitaker and Rockhold