This is a great foundation. Here are some small suggestions that could potentially make things more interesting(hopefully not blowing up the scope!)
- Allow carriages to be sold or upgraded to a more powerful cart
- Carriages should only be able to take jobs from the last town they delivered to
- Add different carriage types or stats. For example have a carriage that takes less days to deliver but has a higher daily cost
- Allow unarmed carriages to take dangerous routes but introduce the risk of penalties(getting robbed for half the shipment/half pay, the trip takes longer than expected, you lose the carriage entirely, or all of the above)
great stuff, I look forward to seeing more progress!