Draw people in? Seems like it happens every time. Everyone wants it until they find out that their class is not the best for small scale PvP where the balancing issues get magnified. Then it is made worse when they start trying to balance for the smaller scale arena and often winds up with terrible unintended powers in the large group PvP. Next thing you know, people start leaving because of balance issues one way or the other until you are left with a population that will only support small skirmishes.
Maybe its just from past bad experiences but I seriously do cringe when I see the idea tossed around.
Zero dollars, because I'd probably quit if they went this route.