Idea for mod / update

[Beatie]

I think that the lack of importance of a fortress is a bad thing in Civ3 en Civ4. Remember Civ2 were you can’t pass trough with a unit within one square of another unit. In Civ4 you can attack any city that you want. What if we say that you can’t pass a Fortress within 1 or 2 squares, depending on the unit you have in the fortress. So if you have a knight in a fortress you can cover 2 squares from your fortress. So if you place your fortresses real good, you can create a defend line. The same thing I think for a city. You should not be able to pass a city just like that. Depending on the units you have in the city.

What do you guys think? I don't know if I place this in the right forum, if not.. please moderator place this in the right forum then!