Hey, this looks like a great atheist convention!
Of the names listed, 12 I’d like to see, 7 I don’t know and might be pleasantly surprised by, and only 2 whose talks I’d skip* — that’s a pretty good ratio. The only drawbacks are that it’s all the way off in Australia, and registration is a bit pricey (~$200-$500), which might explain why there’s some concern that the number of registrants is too low right now. Hey, if you’re somewhere near Melbourne, though, you ought to consider going.
Additional plus: I saw some conversation about it, and someone was complaining bitterly that it was too feminist for his taste.
*You’re just going to have to guess who’s who.