I agree with scepticism towards crafting.
Troopers didn’t craft their own weapons and armours. Fletchers made arrows, smiths made weapons, tanners and armourers made armours, alcminists made fireball spells a.k.a. gunpowder and other burning/explosive mixes.
Fixing and mending stuff, yes. Crafting, meh.
Perhaps the only thing I’d support, since you have the unused amulet slot would be troopers making lucky charms, badges, other minor junk. Cut off orc ears on a string as sign of veterancy could grant a tiny morale increase, for instance. That sort of stuff…