Then noone would ever take more than an 80 Point Fortress.

Starting City = Fortified City.

Then they have the option of building Mausoleums if they need quick defense (with some admin), Hill Forts if they need defense and have time, and Normal Castles for in betweens.

No point to ever build a Mountain Citadel or a Dark Citadel, along with a Fortress.

It'd also be a moron to ever take a Wizard's Tower or Citadel.