I hope that if Mufasa didn’t die, he’d realize how evil Scar was an banish him, like Amanda said. I think Simba would have become a much greater king, and be more confident and strong and believe more in himself. I still think he would have struggled to become like his father, though. He tried that from when he was a little cub.

Simba and Nala would have gotten married, since that was pretty much arranged, hehe.
When it comes to the Outlanders, I feel uncertain. They were most likely from the same pride as Simba. So they would still be around, but it’s not for sure that Kiara and Kovu would fall in love.