Sorry if this has been posted before but I couldn't find anything on it...
If we have uncovered a map, either in a quest or an open zone we should be able to keep it, instead the map resets to being blacked out after a little time has passed. This makes no sense to me. If you've already been to an area why wouldn't your map stay? It certainly wouldn't be a game breaker in anyway and would only make things a little more convenient for the players. We shouldn't have to memorize every zone.