NAVcoin was marketed as a privacy coin form the start. It should not be even up for discussion IMO to lose that property.
It also used to have its own unique method of implementing privacy, during the 3.x era
I'm getting the feeling (and I really hate to say this) that it is becoming more and more homogenized and as a result harder to make an impression compared to other coins.

Still I have hope because the team is committed. I hope the price drop is just due to the market in general and the bittrex situation in particular. It's taking far too long at this point.