I think it would be nice, if in the future, with more regions added, we could have the option to see a bigger map (with a hotkey like "M"). The map what pokemons you can find in that area, similarly to what the current map does, but with the possibility of seeing that info on areas that you're not currently at. It could also show some extra information on what kind of "services" a city can provide, like for example, the safari zones, cosmetic shops, etc.