[0.92] [Suggestion] Let me upgrade soldiers to new Designs
I haven't found how to do that, so I think it isn't in.
I want to upgrade say my peasants to my new designed footsoldiers (take away the club, give them a spear an a leather armor). I think this would cost the difference between the designs in gold and the full material or something and take half the time to train a new unit.
Then it would be fun to group single units to teams and so on after discovering the needed tech.