Are there rules for maintaining a staffed fortification/stronghold? Rules for how much a staff of that nature will likely cost?
So, you aren't as likely to spend all your money on magic gear like past editions, and one new thing you can spend all those ill-gotten gains on is a stronghold — perhaps as the base of a mercenary company, or maybe a mini-kingdom from D&D's Birthright campaign setting of old. But such a construction will be spendy, and paying all the staff, too, while you can only be so much of a group of murder-hobos, or get so many reward-purses from the King.
While it's nice of them to give us this option, are there real ways to consistently make enough gold to keep paying for it, before you deplete the local dungeons and have all the king's gold?