http://us.battle.net/d3/en/forum/topic/8796451514
According to the above thread Travis Day said the AH was a mistake. Does someone have a transcript on what exactly he said.
One argument that resonated in that thread is the following:
This is plain bullshit. It's a non-sequitar. It makes no sense. Tell me how specifically does it followed that better itemization causes less reliance on the AH.Fix itemization, which will fix our reliance on the AH, which removes the biggest "problem" of the AH.
The only way for the AH to be irrelevant is if players suddenly, for some inexplicable reason, decided that they don't want a convenient way to trade with each other. "Improving itemization" (whatever the hell that's specifically suppose to mean), should in fact, increase the likelihood that players want to trade with each other, hence increasing the reliance on the AH.