Yes and no. For some topics they simply don't have the amount of huge rooms, but sometimes they've also been misreading the audience and had put something that

Yes and no. For some topics they simply don't have the amount of huge rooms, but sometimes they've also been misreading the audience and had put something that had gotten a lot of traction the last months in a tiny dev room (I think Go was like that, many years ago). No blame here of course, it's run by volunteers and I think they're doing a stellar job. I'm also not sure if there would be any meaningful response "Yes, I plan to attend X Y Z dev rooms" - if only 10% fill that out, is that a good trend? Is 10% even realistic?