I personally would love to see the original cast again. I don't think they've aged that much. Despite what you say, Idina's voice isn't gone, Anthony Rapp's still out performing, Adam (he sounds like he's straining - but if it's edited....[Not going there])
I would like to see Fredi Walker again - where'd she go? She was so good, I thought ~
I think Matt Caplan is good as Mark - though they would use the full cast or nothing.
However, if they are changing the script, the original cast may not be as good - their interpretations of the roles may not fit the new script.
Personally, I don't care mcuh for Ruben-Vega. She was good in Out Tonight and Light My Candel - after that I....well, I skip her songs!
Any thoughts on who would play Angel. Broadway.com's article said that Angel, Joanne, and Mimi are going to be recasted. Except for Mimi, I wonder why.
Don't underestimate the powers of make-up!
I also agree that they may need to start getting Idina's name out for Wicked - though I think that - well I don't wanna say about Wicked, just yet!
"I've often said I should put sweets in my chair - they'd spend less time on my a** that way....." ~F.W.B.