Don't slam me to hard just an idea I've thought up during work and like to see what people think of it.

Ok, this is for party setting in mind, add a feature at each aetheryte location's depending location like a hub. You receive an item which you take with your party member's anywhere in that particular area of the aetheryte. Once used it generates monster's that you selected at whatever level and are harder to defeat much higher HP etc, but the reward is greater let the developer decided that. These monster's cannot be claim by outsider's and this feature let you determine your camp also just keep in mind aggro monsters is still a factor.

This way you can keep outside monster for solo player's and this system for party style of play. The item you receive can be customize like set time 1-4hr as example type of monster listed determine by location of aetheryte, level, other feature's deem by developer''s. Then if your item run out of time and your enjoying yourself and want to keep going teleport back get another item and run back to you party camp or if you want a change of scenery move your camp.