As someone suggested, simple market making bot at blockchain level would increase liquidity a lot. For example, one can make market at BTC:OPENBTC with less risks. The MM bot can read information on blockchain(e.g. feed price, highest bid, lowest ask), calculate some conditions (e.g. ratio of CNY/KRW feed), tolerance, update interval, etc.
If it is not feasible right now, we may need an easy-to-use MM program (.exe or .dmg or python script)
Now I only have rough ideas. Your thoughts?