I would like something like Paris or St. Peterburg DLC for CiM 1. Of course something similar to Tokyo would be awesome, but Paris and St. Peterburg brought less buildings but was still good. Paris had 40 unique buildings, St. Peterburg had 9 unique buildings. London had 29 unique buildings and US. Cities 37 unique plus 47 unique props. Tokyo 31 unique and 97 unique props. Why lower the standard? Individual landmarks dont please me much.
If you make an entire set of european buildings, the ones on CiM 1, you can sell at higher cost, not 4,99. It could be an expansion not a DLC. And certainly would be the desire of many players, so it does make financial sense. I'm sure Tokyo and U.S. Cities for CiM 1 sold a lot more that the other DLCs.
I don't know anything about art or programming (recycle buildings from CiM 1 as the_traveller said) but I feel CiM 1 had much better DLCs. DLCs with new maps, new set of buildings, new campaign, new vehicles, new characters and new AI vehciles. I was expecting the same standard for CiM 2.