Would it be an issue to remove all repair hammers from the game? That would pretty much make the armorer skill useless, but I'd like for it to be necessary to visit a blacksmith instead. It makes no sense that you can pound away at your weapons and armor with a hammer in the middle of nowhere and have them be good as new. You'd need some amount of heat treatment.
Or I might have it where one can only repair an item up to 50-60% of full heath with a hammer.
So, any ideas on a simple way to do this? I'd like to keep it simple, since I'm not very experienced with scripting or anything. I mostly just use TES4Edit to make easy changes to settings when I make little mods like this.