It's a tricky call to make. If a show is absolutely rooted in the period it was written it can still be produced well if handled properly.
The culture may change, but the emotional core does not.
Look at Hair. Talk about a show of its time. But it played well and maintained its vibrant message because of (unspoken) modern parallels.
Another one is The Wiz. I used to think it was unable to be done in modern times. It is so completely based in the specific era of 1970s black culture. The songs really can't be arranged with a contemporary R&B/hip-hop spin. But it's still the Wizard Of Oz, and that's a timeless tale of facing fears and finding your inner strength.
I saw it done exactly as it would have been done in the 70s and it was presented as sort of a period piece, but with universal and timeless themes. it was a magical experience.
Granted, there may be some tweaking needed (not like Porgy, but more like South Pacific with subtle updates).
Having said all that I think these shows would not play well today:
Hallelujah Baby (shame too, what a score!)
House Of Flowers
I Love My Wife
....but the world goes 'round
Updated On: 8/18/11 at 07:49 AM