I personally believe that the allnighters will on a whole go back to being more underground with attendance figures dropping to 150 - 300 max, more likely to be at the lower end of the scale.
One or 2 of the obvious big events may well continue being successful a few times a year, but I really believe the smaller nighters will become the main stay.
The music will have to merge more to accomodate lower numbers so shite R&B will get played alongside wishy washy Northern and disco bunny modern
Seriously though, this should allow more new tunes in all genres to break through.....as it used to do.
Soul nights attendance figures will probably stay healthier for a lot longer due to the reasons outlined in previous posts, but a lot of allnighters have basically become extended soul nights due to the mass attendance expecting the same tunes they hear week in week out at their local soul nights....and the dancefloor dictates on such occasions.
I think there is plenty of young DJs with plenty to offer, they may not be Butch et al by any standard, but they usually have limited exposure to play stuff they truly believe in, so time will tell.
As for their choice of tunes, all said and done, one mans meat, is another mans poison.......