I'm in the same boat. I don't trust their service at all anymore. It's ridiculous that I can't access my money to do trades when I need to. I thought poloniex was bad when I first started using it, but it's showing a little more promise than coinbase. I like bittrex right now. I'm going to get a MacBook so I can have enough speed and power to download all of the programs I need for my nano S.
RE: Is it time to leave coinbase? Yes!