I just posted to another thread in the general, but I agree with keep it simple. On the other hand, Barrage Ballons over the field would be kewl to look at, and wires, for snagging planes, sounds even cooler. Maybe make em 5-6k up to climb up to shoot em, and have em re-spawn in 10 mins. But have a few around the base, and maybe the center of the map.
I'd also like to see some eye candy in the center of the map, more detailed trenches, and craters. Maybe even a few fires.
Anyway, the WW I Area, IMHO is gonna be around as a great reliever. MUCH Better then the DA. I'm sure it may be 1-2 Arena's compared with 4, but its new, and everyone can check it out.