Even without ETIAW it's still a nice song, a bit on the similar lines as Treefingers by Radiohead from Kid A, just a little ambient piece as an interlude. I love it, I'd love to hear an extended version, I'd just listen to that alone, same with A Hopeful Transmission! :L
I think the fact that the "intros" are not attached to the following song is so you listen to the album as a whole (like it would work if you just had it ob shuffle or whatever). I heard an interview with Guy where he said they did Viva like that too (with the hidden tracks).