It's up to the MD's. We already sometimes have revo/production matches. We have Single Stack Nationals, Production Nationals, etc. So, it's clear that we have matches where only certain divisions are represented. If an MD or club decides to only have matches with certain divisions, I believe that is completely within their discretion.
Very simple, if you don't like what divisions are offered, don't shoot at that club, don't give them your money, find a club that caters to what you want to shoot.