Apparently the old IL-2 engine can handle a lot. The latest Solomons map is huge by IL-2 Standards, spanning nearly 1,000 km - much larger than the Leningrad map (the distance from Tallinn to Leningrad is just over 300 km). Of course, most of it is water
Anyway, an MTO map of that size would cover entire Sicily, Malta and a big chunk of Tunisia (it's roughly 270 km from La Valletta to Palermo and 400 km to Tunis) - AND with most of it being water.
The red, diagonal line is 900 km long:
