For example you cant do First Blood, Bra and Panties or Hardcore matches anymore. Street Fights/Extreme Rules have also seemed to of died now as well.
Then you have Buried Alive, Casket (which should only ever involve Undertaker) and Inferno Matches (Again but with Kane) and those two are coming to the end of there careers.
So with all these gimmick matches dying or not being suitable you are going to have repeated match types happen. Unless you want normal singles matches.
If you look at what we have now there isnt alot and we have to bring back those crap matches where the two guys are tied together and you have to touch the four turnbuckles in a row.
Fatal Four ways arent normally any good anyway Triple Threats work but Fatal Four ways have always bored me.