At least they seem to have gotten rid of bastion points, but damn it is still a stupid system.
Hard Level Caps, Bastion turns, Meta-Limits on how much or what you can make that ate not supported by Ingame-Reality ...
A good system doesn't need all that.
Just give us a list of "rooms", with building costs, building time, effects (income per week, research, crafting), and possible Upgrades (like you can start with a shabby pub for just 10 Gold! It is just a Shed with a shabby table, 4 not matching chairs and a wobbly counter, that spells the cheapest ale and wine, but if you spend a 100 Gold you can upgrade it to a Modest pub ...).
Then give us a template, guidlines and some example for hirelings.
Then you base it all on Weeks instead of stupid meta Bastion turns.
You don't use hard level caps, you use time and money and ingame ressources (certain NPCs, magical items, special materials ...) as a balancing tool.
Yeah, the upgrade to the magical Inn costs 10 000 Gold, so better start looting! But it doesn't matter, if you are level 3, 5 or 10 - If you habe the money, the enchanter will enchant your magical Inn for you and the Mage-Smith will work in your Smith.
If you have the money and ressoures, you can have as many special rooms as you want.