When issues of withdrawal or delisting starts in any exchange, it means a particular coin must be at the receiving end of such action.
Still don't grab why Hive is not creating more awareness to the outside world. Though the growth is gradual, but still not fast enough to meet with the trend of others.
Or who knows why Bittrex might have taken that action ?.
Sometimes this exchange finds themselves in situation, where they need coins with less users to come out of.
We can't point fingers now at any exchange for any actions they take, better still, we should try to figure out why they took such action.
Just say....
I think maybe just not enough volume probably!