Well, just think about it, not all mercs are so “honorable” (they kill for gold dammit haha). A new type of contract would be pillagins some towns (implying there is town rivalries).
Imagine a mercenary company that has failed a few contracts, lost some men, only a few crowns and food left… A good way to get on the road again could be maybe assaulting one or two caravans, and then try to succeed with another contract.
And yes, we are mercenaries, but we can kill two birds with one shot, escorting a caravan to Malmkrog and then selling some goods we bought somewhere or we found as a loot when we razed some goblin camp.
I think that two possibilites could be nice just to make the game more diverse.