OK. Let me try to sort this out.
We start with a base. You are saying this is the mainstream US which you understand to be conservative. So, level 0 -- US conservatives -- mainstream.
Level 1 is the Cathedral which is contrarian to level 0 and which is US liberals or progressives.
Level 2 are the neo-reactionaries who are contrarian to level 1 (Cathedral)
Level 3 is Yvain's FAQ which is contrarian to level 2 (Reactionaries).
So we are basically stacking levels where each level is explicitly opposed to the previous one and, obviously, all even layers are sympathetic to each other, as are all odd layers (I find the "meta-" terminology confusing since this word means other things to me, probably "anti-" would be better).
And what you want more of is level 1 stuff -- basically left-liberal critique of whatever stands in the way of progress, preferably on steroids.
Do I understand you right?
EDIT: LOL, you simplified your post right along the lines I was extracting out of it...
Ah, sorry for the real time simplification! I realized I was writing spaghetti as soon as I looked it over.
A long blog post explains why the author, a feminist, is not comfortable with the rationalist community despite thinking it is "super cool and interesting". It's directed specifically at Yvain, but it's probably general enough to be of some interest here.
http://apophemi.wordpress.com/2014/01/04/why-im-not-on-the-rationalist-masterlist/
I'm not sure if I can summarize this fairly but the main thrust seems to be that we are overly willing to entertain offensive/taboo/hurtful ideas and this drives off many types of people. Here's a quote:
The author perceives a link between LW type open discourse and danger to minority groups. I'm not sure whether that's true or not. Take race. Many LWers are willing to entertain ideas about the existence and possible importance of average group differences in psychological traits. So, maybe LWers are racists. But they're racists who continually obsess over optimizing their philanthropic contributions to African charities. So, maybe not racists in a dangerous way?
An overly rosy view, perhaps, and I don't want to deny the reality of the blogger's experience. Clearly, the person is intelligent and attracted to some aspects of LW discourse while turned off by other aspects.