It's a rough system sure, but it's just designed to be a time sink, already most hardcore raiders clear the tier before the first week ends get their loot the speed runs done then unsub til the next one its just designed like this to keep people playing as long into the patch as they possibly can. If they didn't slow down getting loot like this most of the serious raiders would play less than a week per patch, the way this game works, and how quickly gear goes obsolete most people wouldnt even stick around if it weren't from the time sinks and weekly lockouts.