I have mentioned this before, but the growing attendance will be a gradual process. You can not expect them to sell out games quite yet (unless its a UNC or Duke). However, if this team keeps playing like they did tonight and they can pick up a few more top recruits each year, in a couple years we could be in a wait list situation again (at least 10K against middle of the pack ACC teams).
I watched on TV and the fans that were there (including the zoo) looked really into it. There were a few times you could see the upper bowl pretty empty, but had I not seen those shots, I am not sure I would have known that place was only half full.