The big problems with attendees last year were that the demographic imbalances were in many ways embarrassing, and that they didn't feel it was developer focussed enough. It'll be interesting to see if there is a giveaway at all this year, since a large part of previous woes could be down to people attending just for that, and I'd cynically observe that for many attendees the long term value was actually just the giveaway.

The lottery is a definite step in the right direction, but the branding is just all kinds of terrible, and makes me wonder how much they've really learned.

If they can improve access to the same content and people at remote locations that might be a game changer (i.e. hangouts to allow remote participation in some of their sideshows), as most of the value of attending the main event is what goes on outside the main talks, thanks to YouTube being so effective for hosting those.