OTOH, how much 'overlap' is there between BBT, Walking Dead and GoT? All of those are in the top 5 panels for 'popularity', but if they're all different people, that's one HUGE crowd in Hall H!
With capacity capped at 6K, it won't matter if there's overlap in interest or not. Hall H will be filled. There were lines down to the marina last year for those panels when it was in BR 20 with 2K less seats. If anything, how popular GoT is will play a big role in just how busy the earlier panels will be with people funneling in for it (same goes w/ the other rooms and the later panels).
And yeah, I agree w/ Patman - the BR 20 panels certainly feel very exclusive to this year and will not likely be around next year so for now, that's where I'm leaning.