We're only limited to 3 privileges:
Trespassing, Theft and Vandalism. Why not add another one?
There are lots of possibilities like for example Siegecraft.
We could have an option in Village Idol, to prohibit villagers from building Siege machines, where only people with new privilege can build them without leaving scent.
We could also have a new scent, which would appear when you're trying to use siege machines without the privilege like betrayal or defection, which could be a crime as bad as murder or a little weaker.
It could also be made, that if a person was in the village within ~24h, then trying to siege still counts as betrayal.
Basically I've came up with the idea, because it's really akward when you see a single man build a battering ram on a plot inside a huge village, then breaks the wall by himself and lets the raiders inside (just an example) also dunno why, but I just started randomly thinking about it :F