It's been hinted that the next big installment will be the Mediterranean theater. However, i do like your idea. It wouldn't require a new map, just new planes. The map might need to be updated a bit however. And possibly an option for different seasons of the year wouldn't be too hard? All of this would probably have to be third party of coarse, as Oleg and team will probably get to work ASAP on the next installment (after this one is solid of coarse). But we can all dream...
