I was editing the positions textfile in the map folder to add a port and noticed that some, but not all, provinces have entries for CoTs (meaning the map coordinates of a CoT in that province). I imagine this means that certain provinces cannot have a CoT regardless of the CoT appearance logic. Perhaps there are too many options for CoTs at the moment and if the available provinces are restricted a bit, we can control the location a little bit more. I would argue that coastal provinces along a major river, sea or coastline should have a good chance of getting a CoT (especially if the climate is not tropical, desert or artic). On the other hand, small islands and inland mountainous provinces should have less chance of getting a CoT and perhaps could have the entry in the positions file removed?