It was the subject of a vote in D4. For better or for worse, about 60% of the clubs attending at the D4 annual meeting voted to keep subdistricts, apparently to create an extra tournament for club revenue. Unless something comes down from on high, I'm guessing that will be the process next year, too. At this point, the number of wrestlers just doesn't seem to support a subdistrict tournament any more; the subdistrict tournament is now the size of one of the small regular season tournaments.
Yes if I remember correctly it was a close vote. I think revenue is a big part of this, as well as finding a facility big enough and willing to host a 700-800 kid tournament.
