Well, Bret Hart left the WWF in part because he was uncomfortable with the edgier nature the program was taking; what would eventually blossom into the Attitude Era. No Stone Cold changes that, obviously. I see the WWF working harder to keep Bret away from WCW, probably making him the top face again. This also butterflies away the Montreal Screwjob, and thus, Vince McMahon becoming a major on-screen figure. I have no idea how the Michaels-Hart feud goes from here, though. HBK's back injury is probably butterflied away too. I still think the WWF is able to survive, given how badly WCW was run towards the end both from a business and booking standpoint. Remember, the WWF still had a young Dwayne Johnson on their roster, and his talent and charisma is bound to break out at some point. Rock and Foley are probably the top stars of TTL's attitude era equivalent.