One of the other Bag the Hun scenario themes I'm looking at is the air war in East Africa. This has a lot going for it including a wide range of obsolete and not-so-obsolete interwar aircraft, a relatively small model count, some ground attack and bombing missions as well as dogfights, and some excellent source material to dip into. The number of models required means that it could be tackled in 1/285th scale, which has some appeal as a change from tiddly 1/600th scale painting, but there are a few obstacles to deal with too.
The biggest pain in the bum is the availability of some of the more obscure types that were a significant feature of the conflict, most notably the Vickers Wellesley and Caproni Ca.133 in 1/600th scale, although the former is available in 1/285th from Raiden Miniatures and Collectair. This is not too much of a deal breaker, however, as the 3D printing option looks hopeful. So, I'm going to carry on my background research and hope to identify at least six scenarios with enough variety to make them interesting and enjoyable.