It's very difficult to have an open discussion about this sort of thing. So many people play the game at different levels, in different ways, and for different reasons. Everyone is under the impression that they probably have the right idea and are probably considering most things. Everyone has a voice, everyone wants to be heard. blah blah blah.
I'm a fan of top down design. Small groups of people playing and thinking about the game at the highest level doing lots of math, looking at tons of data, tweaking, changing, and inventing things that will "tickle down" to the rest of the players, customers, and/or community.
Almost every game that I can think of that is played competitively by lots of people has this sort of thing in place. We even see shades of it in the 40k community where the TOs behind some of the larger GTs work with their people / clubs to design rules for their events.
It's plainly obvious at this point that 40k 6th Edition is... Not that game anymore. It's fun and cool to play when you're playing with someone who's on the same page (HEY THERE THURSDAY 40K), but it's probably not the best game in the world right now from a competitive standpoint.
Times are changing. The competitive circles will figure out what's best for them. I think the models are still the best in the business. The story that surrounds the game is awesome. Most people can still have fun playing it for the exact reasons they did when they first got involved. For the people that need a tabletop miniatures game that prioritizes high level competition, there are other options out there and I'd be happy to talk about them somewhere else (email, in store, or whatever).