To my great regret, bittrex has change the great design to ugly interface. I will use it a little less of this reason.
I can't say I was ever a fan of the old one and haven't spent much time checking the new one apart from a cursory glance.
However you feel about their look, it is an encouraging sign that they were overwhelmed so rapidly. I didn't expect there to be a great deal of pent up demand. They could of course all be desperate to dump.