I remember that the original script called for Simba as a teen saving Mheetu from the stampede. That would have been interesting to see, as Mheetu is Nala's brother. I think that Nala would have also tried to save him if she found out about the stampede.
I hope Disney will make another part about Lion King, more characters, I'll excited when see Mheetu, Ahadi, Uru in next movie, P/s: Sorry if my bad english because I'm vietnamese