Mapping could be countered quite easily if devs would care about it. To diminish the effects of ACT they could reduce the visibility range for S mobs to normal mob range or, 2x visibility mob range or even 3x so they don't load in so easily. Standing afk at the aetheryte wouldn't give a notification, the amount of chars you need to cover the entire map would be too huge(so act users go home empty) . Scouting for a hunt would exist again. I don't think they will ever touch network data, the raiding scene depends too much on it now. The only thing I would wish for is that the hunting npc tell you the last time the specific hunt was killed (after the flavor/lore text) so the necessity of external websites and kill marking vanishes completly. You would know trying to spawn something actually is possible and not a time waste.