If I can count (which is rare, teehee) this was my 5th Sogen con, and many of my friends of years past could not attend because of the registration issue as well as fundraising. Obviously, this problem should be attended to already.
The only thing I could really express concern for was panels. I'm not usually one for panels, but with the lack of dealers in the room; I wanted to try going to a few. I know the con can't do much about panels when members decide what to host, but if it wasn't about ponies, it was 18+ panels (I am 18, my friends? not. Panels are more fun with peopple you know, especially with my personality).
I know people decide if they want to do a panel, but do we really need 4 that are essentially the same thing? I could suggest placing some limitations on this. I recall a con I went to that was increasingly dull because all panels were about a certain fandom, or the others were hosted by members that were disorganized and talked about unrelated things, or didn't show up at all.
That's all I can critisize, but this Sogen was indeed fun and I will return in 2012 for a for-sure larger turn out and much more fun (and artist alley!)