Instanced quests that span more than one map

[Ruin0x11]

The instanced quest system in vanilla is pretty brittle. You can also only ever have a single instanced quest active at one time, and it will always be cleared when the map is left. The way it's used for things like escort quest encounters bothers me also.

It would be neat if the quest system was more robust, to allow for multi-map instanced quests and having more than one instanced quest active at a time.