4) We get more Bret vs Austin
Fuck you Vince.
10) Owen and Bret go on to have long storied careers and get inducted into the Hall of Fame together
That would have been so awesome.
16) Age of Cena still happens
Assuming that by 2003-4 Bret was still an active part of the company in a part-time, agent or creative, he'd probably have had a huge input and leveraged the company direction not towards finding another Hogan but another Austin (or Bret).
I would also add that Austin wouldn't have rage-quitted since Bret would have said something about the ridiculous KoR qualifier match between him and Lesnar, so that would have never been suggested to Austin and we could have seen a Lesnar-Austin match at Summerslam or WM for the title.