You only use Waves address in Bittrex to get Waves.Waves is much like Ethereum or Counterparty. You do not make use of an exchange's ETH or BTC address to get Augur or Maidsafe tokens. You utilize Augur or Maidsafe address, which are essentially, ETH or BTC handles correspondingly.The only time you should use an trade address is when it listing Tokes.s
This is true for Bittrex. If you're using the Waves Lite Client or full node, you can send all assets to the same address.