Reasonable is to throttle each chest. Reasonable is to add the requirement to obtain an item, per lost sector boss to open the chest, thereby eliminating the ability to spam the chest. Reasonable (albeit more difficult) is to directly address the glitch. Throttling the entire lost sector loot system that was designed with several lost sectors closely geographically located who's targets are easily and rapidly defeated for the purpose of negating one glitch - that's your dev teams fault - and thereby negatively impacting an already frustrated customer base during a PR issue is less than reasonable.