For what that building cost, the expo will probably not find a bigger building, it was a rediculous amount of money for that building... I will hopefully be there again this year, may not be able to attend but hope to.
If you think it was crouded think about pushing a stroller with a baby in it through there... My friend in phoenix went with us(we drove like 12 hrs one way and stayed with him and his wife) so I was pushing her stroller with his daughter in it, as the rack under the stroller worked well to put stuff i purchased in...