The problem is that these fights are not all feasible.
HW - Cain and Cormier won't fight, so unless Overeem takes the belt, that unification fight can't happen.
LHW - I'm not even sure who the champ is, but Mousasi and Lawal are the only guys that will sell against Jones.
MW - Anderson vs. Rockhold would be decent, but if anybody jumps Weidman, his fans are going to throw a fit.
WW - GSP vs. Marquardt would be an excellent fight, but Diaz and Hendricks are both ahead of Marquardt.
LW - This is the most feasible match. Everybody wants to see Bendo vs. Gil, and there is nobody who has an undeniable claim to #1 contender at LW. Unless Aldo beats Edgar and immediately moves up...