Bad idea, and there some important reason:
1. What do you mean, then say "anonymous" ? Bitsquare already anonymous and deventralized.
But how many peolple using Bitsquare? Less then number of peoples which use Poloniex or Bitfinex.
You ask me: Why that? And i will answer you: because decentralized exhanger is worse then centralized (Poloniex as an example)
Commision bigger then at centralized, it's harder to trade and there more opportunites for thiefs to steal your money. Or your time, while you will be waiting till arbitrator'll solve your problem. Also, arbitrator can check your real personal information (like a video call or e-mail). At the centralized exhanger you can use fake document.