After a two year break, due to real world distractions, I have recently resumed work on a First Eagles 2 mod - Storm Over The Sahara. The setting is June-December 1940 in North Africa, when Italy declared war on Great Britain and invaded Egypt. At that time, Britain's back was against the wall in the Battle of Britain and had no resources to spare for North Africa. Plus, Italy's aircraft production program was a shambles. The result? Nearly all aerial combat during the first six months of the World War 2 in North Africa employed biplane fighters - monoplanes slowly dribbled into the theater and did not become numerically significant until 1941.
In addition to the widespread use of biplanes, there were other similarities to World War 1. Initially, aerial combat took place at the same low altitudes as over the Western Front, and use of radio was spotty - command and control was little different from 1917-1918. Some shots:
http://www.slickpic.com/album/ModShots#2392310