I have spoken to Bill from Bittrex and all that is required to get BitUSD on Bittrex is for more activity to occur on the already listed BitCNY market; i believe Liquidity and Education on smartcoins are the most important aspects here. I think this also applies to other markets (more so the education aspect)

• Liquidity should be easier for people once Uptick is complete as it will allow market making bots a lot easier intergration between both platforms.
• Education is harder but it seems there are currently a couple of marketing efforts and hopefully these efforts will help in this regard in getting people engaged enough to understand the value of the products.