I wish someone could release a mod just like that. I'm playing the Atoll Map with an Aerotropolis in mind, so I can't really pop up skyscrapers everywhere in keeping with the plan. I'm aiming for building variety for such a small map since both the container port and 3300m single runway airport take up half the space of the central island. There are T3 office buildings that could be turned into residentials. I'm looking into doing just that but just in case somebody else has the idea in mind and could do it, it would be a great mod. Long live XLnation.