leveled or Upgradable forts

[athuya]

I think forts should be leveled with ages or upgradable same as armies.

I think from medieval to renaissance to colonieal era the technology of forts and siege stragies are evolving. Therefore there should be upgradable forts like palassade minor forts to strong holds different tiers of forts with different costs, so player or AI should peroritize which should be where and should be getting stronger according to age.

I think every AI is spamming forts in every square inch which are equally strong is not fun or realistic.

in addition successful defensive war against coaliation should be rewarding. long boaring war and have nothing after (e.g can only deal with war leader and cannot even take a small chunk of land from nearby participiant) is not fair or fun for fighting long coaliation invasion. looser nations who choose the wrong side of the war should pay the price.