with the level of trust bittrex has had, they should be careful before they end up losing that loyalty.
I am quite a fan of Bittrex in terms of how they have developed themselves, but the thing is that exchanges that were nothing more than shitcoin exchanges back in the days (where Bittrex and Poloniex are the best examples to name up), somehow can't reach a stage of total (or at least almost) professionalism like Bitstamp, Coinbase, Gemini, etc. No matter how large Poloniex has grown in the recent times, it perfectly shows that as quick as they went up in status and market share, that quick can they lose it too. It's almost surreal when you think about how Poloniex has let it go that easily, while they by now could still be the top exchange in basically each and every aspect. I just hope that Bittrex won't end up like Poloniex.
The wild card here is that we simply don't know how regulators and law enforcement agencies are pressuring the exchanges. I imagine that the BTC-e seizure in July caught many people by surprise. Given the previously lax KYC requirements of Poloniex and Bittrex, it's no surprise that they tightened things up. After all, the less AML/KYC compliance, the more likely they could get roped into similar money laundering conspiracy charges.
Unfortunately, they both occupy a middle ground between shitcoin exchange and legitimate exchange. Can we really trust them to keep our documents safe? I'm not sure.