I wouldn't hold my breath for a Piazza revival unless it's a Roundabout production. It's just not the type of show that there will be much demand to revisit. Commercial revivals are generally reserved for international classics with a lot of tourist appeal. However, I can see this becoming popular with opera companies in the future.
"What can you expect from a bunch of seitan worshippers?" - Reginald Tresilian
It's slowly becoming more and more popular by summer companies to fill the "artistic" slot in their seasons, and I've heard of a few college productions here and there. It will probably never gain the popularity of a West Side Story or My Fair Lady or any of the Rodgers and Hammerstein classics, but it won't fade into obscurity.
Oh, I don't think it will completely fade into obscurity. It just won't be a likely choice for a commercial Broadway revival. Like Grey Gardens and Caroline, or Change, it's a wonderful show that will be very popular among musical theatre fans and academics than be generally known by the public. They will live on through regional, amateur and college productions and in musical theatre history books.
"What can you expect from a bunch of seitan worshippers?" - Reginald Tresilian
The thought of Kelli as Lucille in PARADE gives me chills. Throw in Steven Pasquale and Joshua Henry into the mix, and you got yourself a perfect show.
Kelli woulda made a lovely Sarah Brown in GUYS AND DOLLS. Too bad she's aged out. I would also love to see her Fantine in LES MIS, but that'll never happen.