Let me throw some numbers out there:
A village can have 500 population, and about 90 soldiers standing around costing no upkeep.
One person in the fief with a visiting fee of 1/hour can allow for a standing army of 115.
One person in a fief with a visiting fee of 5/hour can allow for a standing army of 190.
Five people in a fief with a visiting fee of 5/hour can allow for a standing army of over 500.
Combined with income from taxes on trade and production, you can make even more money to pay for equipment.
A village with a visiting fee of 5/hour and 5 foreigners occupying it could maintain 1000 troops self-sufficiently.
Clans that have high fees/taxes on trade will find themselves searching for money to compete with clans with much less restrictions.
In addition, you can attempt to raid player-owned fiefs to steal gold/equipment. Raiding I believe does not take the village population into account, only the defending army.
You bring up very good points Phantom, and ty for the feedback btw. I am just not too happy thinking about bandits as complete parasites (not in the sense that they raid things, in the sense that they have to be provided a fief to work in from another clan). It feels like there should be something done with all of the empty space near feifs and castles etc. Like maybe chopping trees in a forest, nomad camps and stuff like that. But being a nomad seems impossible, as there is nothing gained from non-infastruture areas.
Bandits
are complete parasites, you are basically preying upon traders who are doing the work of moving goods from one end of the map to the other which can take several days, in the hopes of gaining gold. Gold which you have no real use for except to better equip your bandits in a never-ending arms race against the merchants, and the armies and manhunters trying to defend them.
The most you could hope to be is a symbiote, disrupting the economy of an enemy faction in exchange for a place to stay in a friendly one.
Being a nomad(craftsman/laborer) is completely different, you could probably make a lot of money simply moving around from village to village, finding places with low production costs, and simply leaving if the place gets too expensive to stay around, then selling any goods you make to nearby traders without having to move the goods around yourself (or risk being attacked by bandits)
Ultimately, what are you going to spend your money on? More troops? More equipment? The most you could do is take your Strategus gold/equipment/troops and trade it for CRPG gold.