[Sombre]

I wouldn't say incredibly important. Who cares about the odd random minor horror mark? Other than OCD people.

Once people learn a bit more about forts they tend to forget about 'strategic' placement which slows them down and focus almost entirely on where forts can be built quickly and cheaply. The most important thing about them is the fact they make another commander a turn, after all. I consider a few other things about forts, obviously, but definitely not to the extent I would go out of my way to search provinces before building them.