Top notch analysis of tether in a crisis. It's a great token if you are ahead of the crowd, but nearly worthless if you want to save yourself once the trend is fully discovered (by nearly everyone) and tether cannot keep its peg.
As far as long term -- If you are worried about exchanges (you should be) hold your coins in a local wallet or cold storage. Use the exchanges for exchanging.
Etherdelta and other decentralized exchanges are of much benefit for more peaceful sleep as well.
Craig