I think one of my favorite map quests from xi was The necropolis [s] you had to explore a bit to find map fragments then bring them back to a npc and he would put them together for you.
I do support being able to earn maps for zones and dungeons going forward. at the same time i understand people just wanting to buy the map and being done with it. What if they make a ongoing event/quest out of it? Say when they add in a new dungeon or zone. spread around and hidden in said area are ???'s or "Survey points". Lets also say at the start of this quest or event you get a "Magical doodad" from a npc to take readings at said locations. Once you have taken readings from all of the points inside your presented with a shiny new map of the area your in. Once enough magical doodads are turned back in to the quest/event npc the map is put up for sale in special cartography vendors for that server conveniently located in each nation.
this would accomplish a few things. Including but not limited too. Incentivize people to get in and explore every nook and cranny of these new places. Allow those that do not want to go exploring to obtain the map for said area. Promote the co-operation of players. And finaly do something square has never been able to do. Recreate the feeling of the Legendary 2003 Twinkling Treant and the 2004 summer fests "Test of Courage" from xi. And do it every time a new place to explore has been added or opened to us. Properly done the addition of a new zone could be like Main lining a overdose of win cut with awesome and epic.