On the contrary, I went to PostgresOpen last year and got quite a bit out of it. As a then-new PgSQL user, it really opened my eyes to gotchas, new stuff, ways to configure things, etc. Being narrowly focused allows a much further in-depth set of sessions. Arguably, I might have gotten more out of it than SCALE this year, with SCALE being so broad. I'd have no reservations about attending a similarly narrow conference in the future.
Not bad thing perhaps. A focused group of people sharing some experience, meeting each other. Even as narrow as it is you can already explore a whole bunch of topics: security, caching, authentication, web-sockets, spdy, proxying, failover/ha, writing modules, video streaming. Can make it practical (here is how to configure this or that) or share battle stories. That's probably enough to fill a whole day with multiple tracks.
How about exploring how to integrate really really well with http://ajenti.org/ to do away with the need for trawling through obscure ini files to access:
nginx doesn't use ini files for configuration, and I seriously doubt that ajenti is going to help you write your own nginx modules.
This reads a little bit to me like a clumsy and misplaced advert for a control panel - but that could be my significant bias against all of this sort of control panel coming in to play.
I can assure you its not an advert, haven't even tried ajenti: I had just seen an article about the system and since I'm fed up with administrating server via console window AND wanting to try nginx.. well, it seemed reasonable to suggest fusion of two potential goodies!
I would go just to see a formal discussion on SPDY and (more importantly) client certificate auth once and for all. There's a lot of ambiguity and frustration around client certs with nginx, so having a front-to-back discussion/presentation/panel would not only benefit people struggling to implement it, but open the possibility to nginx users who hadn't known about client certificates.
