I guess my question in general is... does projecting information really enhance the experience of the dance at all or is it just an intellectual distraction? Everything one needs to dance the music, after all, is right there in the music itself - I don't need to know that an unfamiliar song was recorded by some guy called Firpo in 2012.
I think you're looking at the glass-half-empty scenario. If you know some of the orchestras, then it tells you something before the music starts, or tells you that one of the 'popular' pieces you like is about to be played, or that it's that awful, obscure, scratchy recording that would otherwise be in the bargain bin and now's a good time for a break. And if it is awful, and you didn't know, you have some detail and can avoid it in future.
Sure, it's all in the music, and in its heyday dancers would have been more familiar with what was likely to be played. Maybe you like the song about the guy whose wife has walked out after he got drunk and lost their money on the horses, and he's now left to look after the screaming kids? Or you avoid it.
On the glass-half-full, it does educate about what you like, or hate. I don't have to think who's playing. And if you like it, then it can enhance the dance experience.
I don't really care whether it's written down (I've been given a spreadsheet printout in the past), or on cards, or on a separate screen, or the laser-display board, or a hologram of the details hanging over the ronda; it just shows someone considered the music.