I don't see how a WWI arena will hurt or even affect the MAs. HTC has said they are using it to test the new DM. That's a + for WWII. It gives those intersted another choice on where and what to fly, it oesnt take away any options for WWII. No ground war, WWII gets to keep that (ok not a + lol) I don't see a problem, maybe WWII will not get as many new planes for awhile but how many are there already? I know there's several holes in plane set for special events but really the holes have been there I don't see them filling up any sooner without the WWI arena. Ice your taints fellas, we re not goin to lose anything