Verm, define "historic levels" for me please? This would be totally dependant on the area you were flying, whether bombers were present, the performance characteristics of your airplane, expected altitude of the enemy aircraft, weather conditions (ie, wind, cloud, fog, etc).
Since there is no cloud layer, there really is no limit to visibility. This means that the fighter who is/can fly the highest has an advantage. If there was a cloud layer the fighters would have to fly below them to spot approaching bombers and their fighter escort.
I also don't think you can generalize all combat in the BOB and the Med as "low altitude." There would have been fights occuring at all levels. The book "Fighter" by Len Deighton is a good resource to prove this point. Often the LW bombers would sneak in at low level while the LW fighters flew in excess of 20k ft. Due to weather conditions the bombers would usually get through, often without being spotted. If bombers tried this tactic in AH they would be slaughtered, because due to icons and clear skies (massive dots) they are easily spotted from 15k above them.
The way to reduce the height of the fights and simulate more "realistic" altitudes is quite simple actually. All you have to do is limit visibility. Here's my suggestions: A. Reduced icon range. (We already have this, but I'd say reduce it even farther to about 2k.) B. Remove those giant black dots that appear at 20k distances. Make them appear at about 4k. C. NO inflight radar. D. Increased number of clouds at about 20k height. E. (Not yet implemented) Contrails for high flying aircraft. F. Sun glare
The important thing here is to get rid of those massive dots. This would make fighters at 25k + unable to see low flying bombers. The clouds would limit high altitude bombing, forcing escorts lower.
IMO the concept of an "alt cap" is about as far from realism as you can get. (What's the difference between this and a speed limit???
) In addtion an "alt cap" is far more damaging to the allied planes as a whole vs the axis planes. Maybe the allieds should ask for a speed limit?
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bloom25
THUNDERBIRDS