I would just be thrilled to see MTW 2. The same time period, events, etc., just revamped with some of the new innovations of RTW like graphics, strat map, and I like the new boat/trade system. WWI or WWII would be weird because all the fighting would be ranged, and bombings, artillery barrages, etc. would be fun, but would be hard or confusing to develop and use in game, but that is just my opinion.