Reviving Black-Swanned Assets
I second what @cm-steem has brought up regarding reviving black-swanned assets. In my opinion, this item should have medium to high priority both to revive past assets that have been affected (Ruble, Gridcoin, etc.), and to be ready to handle any future black swans that might occur. Imagine the bad impression on BitShares if a higher visibility asset gets black-swanned and cannot be revived quickly.
Issue on GitHub
BSIP-0017 : Revive BitAssets after global settlement
BSIP-0018 : Revive BitAsset through buying Settlement Pool