Do you remember comps like for example Eternal Trance by Trust In Trance Records? There were trance tracks besides goa tracks and nobody really cared as much as I remember, it was just good music, and that's how it should be. I do remember about MWNN but imho the drama wasn't that big. Sure some people did mind but imho those are the same people that still think all the psy should sound like it did 10 years ago. And this is just NOT possible, not with psy and not with any other style. No matter what unwritten rules you relay on. To me it sounds more that you want psy to stay as deep down in the underground as possible so only the special people will listen to it and you can feel special too. That was how a lot of goa-people felt back in the old days (imho of course), way too elitistic for my taste and typical teenager behaviour that can still be seen today since people need crutches like their musical taste to define themselves.
Besides that I personally think it's a bit of an antinomy if you on one side ask for more creativity in the scene but on the other hand you have unwritten rules telling artists what to do and what not. No wonder artists decide to leave here for another scene in which they might have some more freedom.