If you go through the old posts on here, you should be able to find some threads on WWI combat that was being done by some guys in the NC/SC area for a while. I don't know if they are still at it or not.

Yes, it's been done, but hasn't caught on beyond a few small groups of guys. I could list reasons why I think that's the case, but it's safe to say that for the most part that kind of thing is going to be best flown as a local-level event among friends who aren't trying to be too competitive.

Other than the extra work of building the planes, and the weaker airframes which means more damage when bad things happen, it should be a lot of fun, I agree.