Usually 12 inch song versions are just longer versions of the original.
Just add extra beats to it and let it roll for a few more minutes so people
can dance to it at the nightclub. The DJ recipe is usually the same for all such
mixes since the early 1980s.
What would be interesting to listen to this version would be to include in between
the beats more of the other U2 songs or melodies of other songs into it.
Add a familiar guitar riff, add that familiar bass intro, mix in that familiar singers
voice off another song and put it into the mix.
That way the song can go on for much longer and the listener will not be so tired
of listening to the same 12 inch song.
Usually 12 inch mixes last for at least 15 to 20 minutes, but this one fall short of
that.
I might just take some time out from my daily routine, start up that old
music studio and create such a new version for us to enjoy