there is a proposal about enabling short of BTSX to enhance peg here:
https://bitsharestalk.org/index.php?topic=9053.0And I translated it as the following:
I think we can consider implementing 'short BTSX', just like 'futures markets' in real world.
Short of BTSX can be implemented by collateralization of BitAssets; this will enable hedge of both sides, and prevent too many BitAsset short orders. In this way, the rules will be greatly simplified.
In the beginning of enabling BTSX short, some protections are still needed:
1、price feeding by delegates is still needed, and the extreme 10% of price feed should be removed from average price.
2、short of BTSX should be matched with minimal price, e.g.,100BTSX/BitCNY
3. order based on 1hr average price is still needed
with the short of BTSX, the process of pegging will be accelerated. If there is too many BTA in the market, short of BTSX can make extra profit.
and another rule should be added: all shorts needs to be covered in a year, or will be charged 5% of interest.