Don't forget - at the end, the Fiddler comes down off the roof and follows Tevye and his Family. They are bringing their traditions with them to America.
The 1996 Off=Broadway revival of I DO, I DO (with Karen Ziemba and David Garrison) had great two-piano accompaniment. It made you think, "Oh yeah - this was written by the authors of THE FANTASTICKS!"
The Beaumont has HUGE amounts of wing space. It was originally designed to house a rotating repertory company - with enough room backstage to house complete sets for three productions, that could be wheeled on and off the stage.
"Considering Contact had no book..." Tell that to John Weidman, the book writer. It had characters, plot and dialogue. Saying it had no book is like saying Les Miz has no book because everything is sung.
There was a Broadway stage version of Frankenstein in the late 70's/early 80's that turned out to be the biggest money-losing flop non-musical in history. We recently had Lestat, Dance of the Vampires and Dracula the Musical all flop within two seasons.
The Neuwirth/Garber revival featured a locker room/shower scene with a flash of Greg Jbara's rear, but at least the ball players had realistic bodies, and the scene was played for laughs.
I suppose they could re-write it to be like David Hare's "Blue Room" (also based on La Ronde), in which one couple played all the roles (and in which Nicole Kidman had a notorious nude scene on Broadway). Otherwise, yes, there are five men and five women, all with equal sized roles.