Equipment Upgrades Factionwide
This mod changes the equipment effects of the blacksmith, shieldsmith, and horsebreeders to be factionwide. That means that weopon, armor, shield, and horse upgrades will apply to all of your providences, not just the one with the building in it.
This also gives the lumber buildings the siege equipment bronze, silver, and gold upgrades at tier 2, 3, and 4 respectively.