I feel, we can make an even simpler change to improve user experience and, hopefully, liquidity.
We have fairly active BTS:USD and BTS:CNY markets. But USD:CNY is completely dead, no one ever goes there. Why? Because it's close to impossible for a random user to stumble upon this market unless she or he explicitly wants to do so.
Also, there's nothing one can do with USD but sell it for BTS. You can't buy OBITS or OPEN.MUSE or BTC or anything else.
What if instead of single link "Market" leading to BTS:XXX market, we put several links like "Markets: BTS, BTC, USD, CNY"? Very simple change, but it may lead to creating and sustaining several active USD:XXX markets, what should immediately make USD much more attractive for everyone.