I would to ask you, what is the reason that make you still use coinbase? is there no substitute for it?
in my opinion, bitpay could replace its payment, lakebtc kraken bitstamp could replace its exchange.
The best exchange right now is BTC-e. They have been around for more than 4 years now, and they were never hacked during this entire time period. They require no verification, and they will never provide any user info to the United States government agencies.