...With that said, all ideas are welcome to ensure that unused swaps are not used for manipulation. We could double charge the closing of unused swaps without using them (but it would penalize legitimate use as well). We could prevent closing unused swaps manually (ie you can only use your swaps in a margin position or let it expires until the end of its period). What else?
Or we can just wait for people to realize costs/benefits of manipulation has become too high.
Anyway thank you for your analysis and have a good day
Raphael
The last time I checked, it was possible to move all of the funds from trading wallet (where one needs funds to borrow swaps) to deposit wallet (where one needs funds to lend swaps), even though there are still unused and not closed borrowed swaps.
So, just block that. It actually makes sense and is not "in a way" for regular system use. Thus, if one decided to trade, have funds in trading wallet and borrowed swaps, he then cannot move the corresponding (!!!) amount to deposit wallet, before closing those borrowed swaps (subject to 1 hour minimum).