On a technical side......
No the Vegas style chandelier can not work on broadway, because you would have to build a new theatre or totally dismantle the roof of the majestic for all those cables.
In Vegas the chandelier does not fall at the same point (no intermission) and just goes back up quickly into the roof. On Broadway you would end up with the chandelier having to fall back into it's loose pieces floating all around the theatre (as it is at the start of the shoe) that just would not make any sence.
Yes the Broadway chandelier needs to fall faster, however it is the largest one in all the productions (except vegas) so maybe that's why it is so much slower (and a red strobe light does not helo at all)
they cant introduce the Raoul cage because it would require replacing the whole stage floor (I doubt there is enough room under the stage for that anyways. Pluss from what I;ve seen, it is also a very high object to be stored under the stage, Vegas has a much deeper basement.
I dont even think they can introduce the espanded Il Muto scene because that takes up atleast 3 or 4 fly rails, the current one takes up only 1, I dont think they have any more to spare.
Don Juan I think, although a nice change in Vegas, I prefer the 'barn' over the 'castle'
The only easy changes I think they can do would be to replace some minor pieces:
The way the Dressing Room mirror works, where it looks like she is stepping through the glass when it is still closed, rather than seeing the whole piece of glass slide open is cool.
the bride 'breaking' through the mirror is also cool, but not nessessary.
The last thing that i really loved (and most people don't even realise it) is the Vegas boat. there is a piece in the boat that popps up when it turns into a bed, almost like an ornate headboard thing, that makes it look more like a bed than a boat.
http://www.flickr.com/photos/27199361@N08/ Phantom at the Royal Empire Theatre
