This will be a rather short post. In tolkiens work gold was desired by all races of middle earth, quest were made to recover it and dragons hoarded it. Yet in this mod golds only real purpose is trimming things or being used as protective blocks. I think that gold should be used to craft coins to make it more valuable, and if gold becomes to op then it can become rarer, which is really how its suppose to be.
Gold coins is something that I have wanted for a long time. If you can make silver coins you should be able to make gold coins. Gold coins would be worth 1 the same as a silver coin; however, it would make since if some npcs would perfer gold instead of silver. Maybe they would give you a discount if you payed with gold or would sell more valubale items in exchange for gold coins only.