Tile Overhaul to Cities.

The general idea that I have in mind is that instead of the tile system on planets, there would be a randomly generated map with cities and slots (both blocked, cleared, and must be cleared) all across it with which to populate and build. There would be capitol cities, cities can prioritize production, agricultural regions, etc. An extension of this through war would be you could actually direct ground invasions, pick the points which they would land, and pick the routes which they would conquer. What do you think?