Damn, so many to discuss, so little time.
Savage/Roberts: I think this ended on an episode of SNME, but DAMN! this was one of the best rivalries of the early 90's and needed to end in a chaotic brawl/bloodfest, specifically WMVIII. One of the biggest disappointments of my childhood.
Well, the whole feud was happenstance because of Warrior leaving and Jake needing an opponent, so really anything was gravy. And Savage was then needed to move into the World title program by WM, so I can kind of see why they had him finish off Jake so decisively. That being said, fuck this should been awesome.
Santana/Martel: When/did this even properly end?
Once Tito became El Matador and ditched the Strike Force tights. Other than that, it was mostly a house show feud won decisively by Martel. Timing and PPV just didn't align properly to get them a singles blowoff in proper manner, although the Summerslam 89 six-man is kind of a lost classic.
Hart Foundation/Bulldogs: I know these guys had tons of great matches, but did any of them actually signify "And this feud is over, here is your winners.."
…The Hart Foundation. They won the titles and then won the blowoff at Wrestlemania III, complete with the evil ref getting the pin, then screwed the Bulldogs out of the belts in the 2/3 falls match on SNME before the Bulldogs moved down to the Islanders feud. Yeah, the Bulldogs kind of got the moral victory on SNME by winning by DQ, but really once the Harts won the belts it was all uphill for them and downhill for the Dogs.
Piper/Flair: Seriously, before/after they decided to not do a Hogan WM8 match for whatever reason, (I've seen them make worse decisions on wrestlers still fighting each other after less than stellar House show reviews), these guys were Golden against each
other on the mic and in the ring. Was RR92 their definitive ending?
This was a pretty major feud without any kind of TV or PPV blowoff, which was weird. Vince taking the chairshot was HUGE at the time. I dunno, chalk it up to "plans change" I guess, but I'm thinking Survivor Series 91 might have been it.
I tried to go beyond WWE late 80's/early 90's, but it was my peak of interest, so sue me. Any ones that also really pissed you off? Keep up the good work Mr. Keith