Bittrex supports a lot of tokens. Why Veritas is not?
My take on it is that VERI is all about peer-to-peer, and most of the exchanges are centralized. EtherDelta is decentralized. I'm guessing the centralized exchanges don't want to support something that ultimately will make them obsolete. With that said, I think there is one advantage to centralization, which is with respect to the fees when placing orders. When you place an order on EtherDelta, you need to pay a fee regardless of whether the order completes. On a centralized exchange there is no fee unless it completes.
I don't like the fact that I don't find it easy to place order either to sell or buy on the ether delta. Now the centralization doesn't not have negative effect on trade value that envisaged by some. Just that it might have a larger market that is expected.