I think it's inevitable for US based exchanges. They'll have to be regulated or move out of the us and not sell to us consumers.
This will definitely spook people. Keep your coins in your wallet and not on the exchange.
They already are regulated as far as I know, and that's a good thing. Where's Poloniex operated out of?
These people who run the exchanges are either retards or criminals or a little bit of both. You can't justify holding a customer's money for weeks or months. There has to be a governing body to complain to. I'm fine with KYC regs, but anonymity isn't all that important to me anyway. It is to some, but I do think these exchanges need to be whipped into shape.