I don't think WW1 could ever or will ever see as much usage as the DA BnZs, I agree 100% that the DA is so popular because of its unlimited plane set; more-so, the late war monsters. While WW1 planes have distinct advantages, I don't think there are glaring differences such as can be found in the WW2 set. Yourself or some of you other guys in here with broader WW1 knowledge, like FLS, and wmaker please correct me if I'm wrong. My point is, I think it is this huge range of performances between WW2 planes that make the DA popular. A lot of the DA regulars fly only the most powerful aircraft to put themselves above the rest. Something they can't do in the WW1 arena. Not to mention, the WW2 planes are just plain easier to be proficient in.