As far as I can tell, you're trying to use standard arguments and appeals to emotion and group membership. LWers, as a general rule, come here because it's a community that mostly ignores those appeals. LW is one of very few places I've come across where this is the case.

In general, the most effective thing I think you could do to improve your posts and comments would be to use more specific claims and back them up with specific evidence. You're doing a great job of creating outlines before you post, and with translating your ideas into simple language (really, we do appreciate that). You could work a bit on being concise: there's no need to write an essay just to ask if we should have more areas than just Discussion and Main.

Another, specific thing relating to this post: taboo "elitist" and all synonyms. You already started to reduce elitism to the parts that were bad, and I think you could benefit by going a bit further with that thread.

Finally, we kind of do have a third level: the biweekly open threads. This probably belongs there.