Summary: I did not see this in the list of rejects so please correct me if I am wrong, but this would just be an option in a city region with a blacksmith under the Unit Orders tab where, in addition to the training option, you can also pay gold to improve your troops equipment.
Description: As written, I envision being able to sit in a city and slowly improve the quality of my soldiers equipment the same way we can improve their training. Equipment damage should be at zero before work can begin, but otherwise works the same way training does.
Benefits: Allows you to improve your unit without loosing it and/or loosing your captain
Downsides: Realms with crappier RC's might not be encouraged to build better ones I guess. I'm not good at this.
