What in the blue blazes were you guys thinking of  when you conjured up the weather?? You have WW1 (sometimes rudimentary) aircraft taking off in weather that would ground an F15. Those acft were definetly not IFR equipped and did not have little things like carb heat. Also flying around in near blizzard conditions locating and attacking targets and other acft would be nearly impossible  because When in snow / fog pilots are subject slant range vision and could not see much past the nose of their acft. 
  
Barrage balloons are located  so  far from the front lines they would be totally ineffective, also I doubt ,very seriously, that BB's would be up on foggy,snowy, rainy days -- it's the old slant range vision thingy all over again.  My acft, regardless  of type, will take the normal time  to change direction 180 degrees while AI acft can do it two or three times while I am in a 45 degree bank attempting the first turn.  Rear gunners on the two seaters  can fire on you attacking from any position when in fact the best way to attack these acft was from underneath or from the front where the guns could not  track. Enemy fighters can suddenly appear on your six while you are still trying to overtake their formation. A shot-up, and breaking up enemy acft will just simply disappear and fails to register on your score. 
  
Where are the Rumplers and for that matter the Taube?