That every single Wrestlemania main event from WM 10 on would have been some combination of Hogan/Warrior/Savage/Piper/Dibiase until them dudes died or retired due to injury 
Them WM mains at 11/12/13 were trash, but in hindsight you needed those to build guys like Taker and Hickenbottom and Bret into household names.
If Hogan never went to WCW, you think Austin or Rock ever gets put over?
"Nah, that doesn't work for me brother, Rock's not ready"
Wrestlemania 14 main event would have for real been Hogan vs. Savage w/ Tyson in his corner, but Tyson turns on Savage to help Hogan win his 16th world title. Austin and Hickenbottom wrestling on the mid-card
We're basically watching the modern-day version of that in WWE today.

Them WM mains at 11/12/13 were trash, but in hindsight you needed those to build guys like Taker and Hickenbottom and Bret into household names.
If Hogan never went to WCW, you think Austin or Rock ever gets put over?
"Nah, that doesn't work for me brother, Rock's not ready"
Wrestlemania 14 main event would have for real been Hogan vs. Savage w/ Tyson in his corner, but Tyson turns on Savage to help Hogan win his 16th world title. Austin and Hickenbottom wrestling on the mid-card
We're basically watching the modern-day version of that in WWE today.