There is actually no point to require minimum 192% (MCR*MSSR) starting collateral anymore. Before change in shorting rules (with old rules which are given in documentation) it did make sense, because margin call could be triggered at this threshold. Now minimum collateral can be set to MCR.
It has a positive point, it prevents someone to set 175% collateral and get margin call 2 seconds after finishing its operation if the price move a little.
When you say that it makes no sense, is there a way to avoid it ?
Because when I'll increase the MSSR to 140%, the collateral asked will be around 250%, which is crazy high. I want to incentive shorters, not the oposite.