Some sort of way to play/contruct maps which are made up of two maps, but all locations have a 50% of being from each map. For example, if somebody wanted to practice USA vs canada, they should be able to create a map, consisting of a USA and Canada map of their choice (rural or urban or default), so that the combined map will pick from each country 50/50. This might require a bit of mapmaking for combining their desired maps. An alternative is to just have preset 50/50 maps, but this is less customisable. Would also be great if this could be extended to be even more complex, for example england vs scotland vs wales vs northern ireland maps.