While I certainly have mixed feelings about world NMs, I would like to see it incorporated into the game. Start off with monsters that drop "common" items with relatively good stats but nothing of the Ridill drop rate, and the corresponding drop rate. Have people interested in say, a certain melee ring, camp the corresponding NM, quickly kill it and move on. This will create interesting NM pre-pop atmosphere, especially at first when introduced, but it won't ever be too congested as say, Aery was. A change of respawn timers is in order too.