That's the Facebook team now. They are a support team and they answer what they can but as a business with competition they can only do so much. A forum is nice but then it has to be managed. Some companies have the resources to do that. 40k would have issues because there are LONG STANDING forums already in place such as dakka dakka and those like it.
With GW focusing more on the tournament scene how can they not have a hand? Tournament organizers have immediate impact on a rule GW has the final Overarching view that is the end all be all. They are taking that seriously and waiting to see how things turn out before making stupid day one fixes.
Remember, anything released today was finalized MONTHS ago
So, you are saying that two dozen people will figure out every single interaction, every single combination, and every single flaw in a few months while also having their own personal life, work, business, etc? I think your expectations are severely exceeding reality.
There is no reason to adjust points beyond a competitive side. Casual players will play with what they think is fun and cool. Not what is competitive.
What game has a balanced ruleset? Please, I am curious