I think that there can be things done to a production to make it new and exciting for audiences without really "changing" the show. For example... I loved what they did with the recent revival of KISS ME KATE. The orchestrations were updated as well as the vocal arrangements. Just doing that I think made the show much more accessable to a modern audience. They didn't touch the script (to my knowledge). The choreography and set design was done in a modern way and integrated into the show beautifully.
On the other hand, other shows that have been really overhauled, like ANNIE GET YOUR GUN, I don't think would have had a modern revival life if they hadn't been changed or "updated." I mean AGYG had things in it that are pretty offensive to today's audiences. If you have the blessing of original creators or their estates, I think it is acceptable to update these shows in script or organization. I would rather see a newer version that the general public can get excited about and have these wonderful songs still in our collective consciousness than have the show and songs disappear for all eternity. To do this though, I think you need a team that is incredibly respectful to the original work and is willing to keep the integrity of that work and not create a show that is absolutely nothing like the original (which is what I think has happened with many revivals of ANYTHING GOES, let's say). I hate it when songs by the same composers but from another show are inserted into a show.
That's all I have to say about that. Anyone else agree or disagree?
From the evil she done Lord
Set her free, Set her free, Set me free
Don't let my sorrow
Make evil of me