The problem of fort types

[thejeff]

Agreed, the thematic reasoning that big forts are harder to build is probably what drives this. It's been a problem since Dom2 and the current version isn't as bad.

I do think that allowing a nation's special fort bonus to be the ability to build the same forts more cheaply and quickly in their preferred terrain rather than being able to build bigger forts at the higher price is also thematic.