The liquidity for hbd has improved, but its still low, if someone wants to do large buy/sell on the market he will need to do it gradualy to avoid big slipadge ... if someone sells large amounts of hbd at ones, the price will go down, but only temporary... as long as the debt limit is not reached no issues .... also there is always to option to do direct conversions, hbd to hive, and then sell the hive as more liquid.