Re: Why Mabel?
95 was a year where all the money that could be made for Vince was in face vs face matches. The Fed had no credible heel characters at all so there's no surprising he scraped the bottom of the barrel for Mabel.
I wouldn't be surprised if Vince was thinking that he needed a large challenger because the champion himself was large besides Diesel had beaten Bulldog, Owen, and Jarrett in matches on Raw so he had limited his pool to work with.
In my mind Mabel never generated enough heat to ever main event anything or even be considered a main event player (and I believe that continues even to him pushing this guy in the 2000s). He must have been just one of Vince's guys.