Four man tournament would be fine by me. I would rather that than "we need a main event so let's create another belt" which is what this feels like. (If it is actually happening)
I guess I mainly question the validity of Poirier and Nate as 165 champs. I would not consider either to be "the best 165 pound fighter."
I'd just rather see a WW than a FW vs a .500 LW.
RDA was a 155 champ and 170 title contender. Other championship level guys seem more qualified than Nate or Dustin, do you think both of them definitely beat Khabib? Woodley? (If he can make 165, but he has never missed 170 to my knowledge).
Once again the UFC is creating a belt and NOT giving the opportunity to the most ideal fighter. Remember when they had a 145 women's title fight without Cyborg? The last thing the UFC needs, from my long time hardcorish perspective, is more "paper champs".