to be honest si i think thats mostly to do with the collective having an idea what sound they want themselves.
if you look at new producers when they release on labels not involved with the collective its a differant story. ie android.. his other stuff is totally differant from his powertools/cluster stuff.
from my own side of things, damaged trax is nothing like the collective stuff i hope, i dont mean that as a diss to suf but i want to carve my own sound. but for the stuff i've done for suf i needed to supply them with a perticular style. if i'm asked for a stayupforever tune then theres no real point in giving them funky techno.
but i do see your point on labels like yolk. i think yolk, although still releasing some great tracks, has lost its vision a little BUT on the other hand its chris's label so possibly chris's vision for the label has changed?