With GSP expected to face Kos in 2010 and the aforementioned Lesnar fight with Cain, I think Lesnar/Cigano might happen in Toronto. We recently sanctioned MMA as of 2011 and you know for sure that Dana will absolutely put his best foot forward and set the highest attendance for a UFC event ever. Rogers Centre, Brock Lesnar, we're talking at least 65,000 in attendance.
Back to the thread, I don't know if Cro Cop beating Mir will shoot him up to a title shot. Mir has lost 2 of his last 3 and his only win was against Kongo, who isn't even a top 10 opponent. Even if he beats Mir (which I hope he does), I still think he's another 1 or 2 wins from getting a title shot.