Interestingly enough, the one possible exception to that is Coco... and that is the one they have chosen not to go forward with!
I agree with your point, but I'd argue that some films at least feature Disneyfied versions of different countries and cultures that make some sort of sense within a country pavilion. Ratatouille, for example, is pure Pixar, but it is very clearly set in Paris and riffs on French culture quite a bit. I don't think Beauty & the Beast does at all, beyond the odd French word being dropped into the opening song.
Also must say that I love, love, love IdF and fear this could be the beginning of the end. I'm not particularly enamoured with the circle vision movies and usually give them a miss, but this film is one of my favourite attractions at Epcot.
All that said, I do understand why you would be looking forward to the attraction simply because you loved the film and its music. In my case, they've really won me over by putting Coco and Hercules front and centre in the concept art for the new nighttime show as they are two of my absolute favourites. I'm not sure quite why Hercules has grown on me as the years have gone on as I don't think I was a massive fan at the time, but that's something for a psychologist to tell me one day!