I think Gilbert Melendez and Nick Diaz made a case that they can be legit stars in the highest echelon of MMA, and I think have outgrown Strikeforce. There is nothing left in the organization for either guy. Look, I would love to see Melendez-Thomson III just to see a scrap, but is there a question that Gilbert has flown by Thomson? Who's left for Diaz? Sure, Tyrone Woodley is a great prospect, but Diaz is going to be looking to finally make real money.
I'm not ready to call for Diaz to fight GSP - his ten fight win streak is impressive but the biggest name on that list is probably Paul Daley. But he is a big name, marketable guy who can make a fight interesting. To me, there is no better opponent for Diaz to make his UFC re-debut than Jon Fitch. That's right - throw him in the deep waters. I was thinking BJ Penn, but I know Penn is tight with the Diaz Bros. Fitch and Diaz present interesting problems for each other and actually complete each others skill set. Fitch is a wrestler-grinder, while Diaz is a puncher who can sub off his back. I think it would be an outstanding fight.
As for El Nino, he's looking to unify some titles and nothing would set up a UFC run for Melendez than a fight with Jim Miller. He's on 7 fight win streak. BUT . . . and I'm not totally saying Jim Miller is overrated . . . but he is kind of overrated, or untested. While his win streak is impressive, there is nobody in the top 10 on that list except for Gray Maynard . . . who beat him. Miller is making a lot of noise, but he needs a top name to make his case. As for El Nino, Miller is the perfect fighter to introduce him to UFC fans. He's a top guy who, with a win, would vault him into a title shot. Both guys are intense fighters who look to finish.
So there it is . . . with Jake Shields already fighting GSP and now Nick Diaz and Gilbert Melendez having outgrown Strikeforce, we are seeing a Cesar Gracie invasion of the UFC.