I want to use 1Broker but I won't lose any more of my BTC to theft. My BTC1.84915808 stolen in the Bitfloor hack (not including the partial pathetic repayment of BTC0.02055598) was the last time I ever let my own BTC sit in private keys I don't exclusively control. No matter what anyone's security claims are.
I don't have a problem when I am given OPM to work with, though (like Bithorse.co admin giveaways that have been the only deposits made to my account).
The option for account wide 2fa(Not just for withdraws) will be implemented very soon!
The alleged mechanism of the Bitfloor exchange-wide hack (and others before and since) would not have been stopped by mere account-wide 2FA.