It's not a question of "need", really, but "want". Broadway doesn't "need" anything, but its "wants" are as cyclical as any other business. Right now, the trend is to big, mindless musical spectaculars, and if I had the opportunity and the talent available, I'd do something like a big, splashy musical adaptation of material that's just familiar enough to have potential: a musical based on PILLOW TALK, maybe.
"That duck was a sexual toy, and it was on display!" -- an unknown Nashville town leader