dramamama611 said: "I would not be in favor of this as an actual award. Composing a show is more then just one great song. It ALL should be outstanding to be award worthy."
^ This exactly!
For those of you in favor of Best Original Song, would you also be in favor of Best Monologue in addition to Best Actor? Because that's essentially what this is saying, that even if the whole of somebody's work isn't great, they should still be rewarded for one great individual moment. Plus, realistically, while it's fun for us to go through and think about songs from non-best score winners that should have been rewarded, when the actual voting would happen, I'd be shocked if 9 out of 10 times it didn't go to the Best Score winner. If they like a score enough to vote for it, odds are they like a specific song enough to vote for it too (and certainly in years like this, it would get caught up in a Band's Visit type of sweep).
And as far as the movie comparison, it's completely different because Best Score at the Oscars doesn't have anything to do with the original songs. The Oscar for Best Score doesn't go to the best collection of songs, it goes to the best underscoring. So for instance, when "La La Land" won Best Score, they weren't rewarding Pasek and Paul's collection of songs, they were rewarding all of the music in the film BESIDES those songs. With the Tonys, though, Best Score is already rewarding the same people for the same work that would win Best Original Song.