Yes, I know my modmod only enables 1 larger radius instead of 2, but in RoM's case, I felt that it would unbalance the game too much to allow 2 extra squares. FYI, you need to have a city reach Influential culture before the new radius unlocks. You will need to start a new game, old saves are not compatible. Interesting, I had no idea about the player options, but keep in mind, modders are only given 3, and no more, to play with, so I don't want to squander them, and be forced to remove one in the future. I can look into those various improvement tweaks, but keep in mind, the way the AI sorts and decides to build improvements is pretty convoluted, I don't know if I can do much without breaking it completely. I might have to steal some of those... Forts can serve as a short canal, I believe 1 square inland.