Someone in a Tree2 said: "My question is would this be a full-fledged musical or not? A 10-episode arc means either A) apportioning the existing 10 songs written for the original show over the 10 hours of the project at the rate of about one per hour, or B) writing new numbers. The second option would scream of hubris, and the first option would hardly give me a fully musicalized show.
Maybe they're gonna dust off all those trunk songs that weren't good enough to make the cut first time out..."
It would be interesting to see some of the cut songs and it would be a good way of fleshing out characters who don't get a solo in the final show. There's a lot to say about that, with many dancers starting out with bigger parts and then realising their characters won't be remembered by most audiences. (And that's how you can still use 'One' as the finale to the whole series, because the equality of the taping and first workshop gave way to a set of core characters and minor characters after all.)
But most of the actual songs in the show are far longer than ones you usually get in a screen musical. If the script is good, you only really need one long song per episode, or two standard-length ones. (Like musical TV shows such as Crazy Ex-Girlfriend, which still felt like a fully fledged musical.) There are also the songs that have never been on a cast recording, and lots of monologues and dialogue with backing music.