I am now a fan of the 30 day expiry on shorts because I believe that it will dramatically improve confidence for buyers and traders that they can get in and out without a large haircut when selling, with flow-on effects to overall market liquidity and marketability of BitUSD. I think it was right to grandfather existing positions, because nobody likes the rules changed on existing positions. But my question is what do shorts with these positions actually lose by voluntarily rolling them over to the new expiry regime?
If BTSX rises substantially, their collateral position will increase in value, and to maintain leverage it would actually be beneficial at that stage to roll anyway.
If BTSX falls substantially, the shorts can only be retained to the point where there is a forced margin call.
In the interim, instead of sitting and waiting for a year for the grandfathering to roll off (an eternity in the competitive crypto landscape), if the shorts were rolled this might increase liquidity and the peg in BitUSD, increasing the value of BTSX to their gain.
Maybe such voluntary rolls are happening, I'm not sure how to check. But if there are shorts reluctant to do this, I'm just curious to know what your reasons might be.
This is just an open question, not a criticism by any means, because it is not for me to question subjective rationality.