Let's preface this : I don't know yet how feasible this is, how map addons would interact with it, and so on. It probably needs investigation, and as such will take some time to get to.

It would be nice to add maps as an inner creation type (like documents/cutscenes). You would choose a specific zone map, and be able to add pins on it that would mark points of interest (using quests, profession, city services markers... which the player could hover on to read info about).