You call it the Cristina Aguilera way, I call it "going all Mariah Carey" haha

Banzai and Ed were completely changed, new names and everything.
The biggest shame is, they took 2 comedians to voice them, and I personally didn't notice that at all.

They could have never forced the original voice actors anyway.
Matthew for example is doing his own thing, doing plays, being on stage, he's in London now for the past few months doing his play, so I doubt he would have had time to do the voice recordings if he wanted to, as he needs rehearsels, and did theater at the time in the US aswel.

The voices from the cubs could have been the adults now, that would have been cool to see. But JTT's voice would not suite adult Simba in any way.
Niketa Calame was at the US world premiere though.