Originally Posted by
Lord Baal
I would argue that instead of forcing a single building slot on the building system, or the frankly bad "specialize your cities, limited slots per settlement", the cities should be able to merge too. Unlimited slots, and simultaneous queues depending on the size, money, resources and manpower available. I describe it pretty in deep on my wall of doom but basically the buildings you order to make should be the kind of things rulers actually did, chapels? Of course, barracks, gallows, jails, town halls? Too. Brothels?? Not so much.
And each building should be progressively more expensive, require more work, more upkeep and so on... so either you have more builders/workers/resources or you'll spend A LOT building them. Building several things at the same time is an option, but it spreads thin all your resources on that city so in the end it might not be the best bet. This would naturally make you spend more on critical places and when upkeep on money, manpower and resources is compounded you'll find yourself abandoning castles and dismantling facilities on many places instead of "hurr durr you have only one slot so is gonna be money, spies or soldiers..."