You can bet if/when they add addon support, something like this will be created fairly early on. Plenty of other games have had similar things made, so I don't see why it can't be done here.

I for one look forward to Twilight over Thanalan playing at night again like it should be anyways. I'd actually bring back a lot of the old 1.0 music, because if there's a shred of anything good about the original game, it was hands down the music.