Talking about time sinks and staying in the same zone for hours on end, that's exactly what SE has done with these crafting torques. Abyssea was very successful in its NM structure, if it means keeping everybody happy add pop items to drop from certain mob families (alongside a roaming NM that spawns every 20mins) that can be used to pop a NM that has a 33% chance at dropping a KI, one of up to 3 needed to then pop a NM that has good chance at some bad ass drops. The Abyssea structure was excellently put together, no harm in ripping off some of the successful elements to one of fans favorite era's in ffxi (and I will always say that if Abyssea came out 1 year earlier SE wouldn't have lost so many players - 4-5years of meripo's and side-grade end game activity rewards started to make people quit and so many did in that year before the level caps increased.