one day: Cormier v. Romero. two old short wrestlers, i know, but it's still VERY intriguing to me.
IF Romero becomes MW champ, and Cormier is still LHW champ by then (he already beat Gus and Rumble; how about after Cormier v. Gus/Rumble winner?). MW champ v. LHW champ? Only problem is MW is stacked with contenders - Jacare, Rockhold, Bisping, Mousasi, Weidman, etc. are always a threat.