as for liquidity, if you want to do a big trade in options, you can also publish it here. the current market is liquid for relatively small quantities, as only we ourselves are now functioning as market makers, with very very tight small spreads, just to get the trading in options going hoping other traders and market makers will join. its compareble to spreads in stock options on big stock exchanges. So for the normal user depositing a couple of BTC and doing small trades, the market is liquid. For a whale wanting to buy/sell hundreds options..well...price discussions can be done also outside the platform in a thread/trollbox, but indeed should not be executed at market.

As for futures...currently we just connect various exchanges via a tradebot on the exchange giving you similar liquidity as other exchanges, though currently the best liquidity for futures trading is without a doubt okcoin (though their index is less reliable for dollar trading, as its mixed dollar/yuan index). We will be trying to add other exchanges, to make the market as tight as possible also in futures. (maybe even just 0.01 spread, as arbitrage between exchanges is virtually always possible...so then instead of arbitrage....we just offer a market with a 0.01 spread...)