Liza's Headband said: "As a massive Bat Boy fan, I couldn't disagree more. I really don't think it would transfer well to film unless the score was streamlined a bit. It's not the most accessible for general public consumption, in my humble opinion.... "
Liza, would I be too far off the mark if I were to associate the phrase "accessible for general public consumption" with "a safe(r) bet"? (IMO), FOX is going far too safe with their Rocky; tweening it up like Glee. I wonder if they chose Rocky because it's a safer bet - based on the response of the Glee episode.
I would agree that Bat Boy's plot and characters fall outside of the mainstream, but so do John Waters movies, the original Rocky Horror Picture Show (especially during the decade it was first introduced), even Sweeney Todd. Still, all have found respectably large enough audiences to be considered successful, although my definition of "successful" doesn't necessarily include financial reward.
I also agree with you that the score might benefit from some tweaking, whether it be streamlining, or (as I think) some improved musical arrangement beyond the instrumentation/scoring/vocal arranging that's on the OC album.
As for the score, I think it walks a very palatable line between traditional musical theater style and rock. There's a lot of humor in it - i.e., "Let Me Walk Among You", "Ugly Boy" and even "Apology to a Cow". I especially like the line in "Inside Your Heart" where she quickly blurts, "I'll be fine, I heal real fast".
"Hold Me Bat Boy" sounds to me like it could have been a part of Little Shop...'s score and its refrain sticks in my head. "Inside Your Heart" is very sweet and fits the traditional musical theater template. Truth be told, I find much of the score to fit a traditional musical template, yet it's still musically interesting.
I don't think Bat Boy would do well in cinemas, but cinemas are no longer the singular, mainstream format for movies. IMO, cinemas are past their prime. I'd still have preferred FOX chose Bat Boy over Rocky Horror for TV. I could also see it as a Netflix or Amazon production. I also think that Dr. Horrible... opened a door that should remain open.
Bat Boy isn't the perfect musical, which is why I think it could have a better chance for success on network TV, like FOX, where it's free and accessible to all. It's macabre enough for Halloween, and (I think) the score is more accessible for the general public than you've given credit for. I mean, you like it and I like it - isn't that enough? 