I would really love a way to sheathe, holster, or strap larger weapons, such as maces, fire axes, and awl pikes. To my knowledge, there isn’t a means to do so. I tried the firefighter belt, and it does appear that the fire axe is too big for it. When I have played other games or watched movies with medieval weaponry, there is typically a way that someone can sling such a weapon so that they can carry it hands free with easy access.
Oh, adding to that, I think an auto-wield function would be nice too. A few times in a fight, I drop my bow, pull out a melee weapon, kill an enemy, pick up the bow again, the bow goes into my inventory, I retrieve the bow, and the monster I was hoping to shoot is right next to me, so I drop the bow again. It’s kind of frustrating at times. I accept that I have to do it, but I would rather not work around it. I think this feature could be similar to auto-pick up where you toggle it for a category of items (such as fire axe). Every time you pick up a “fire axe” it prompts you if you would like to wield it, the same prompt that occurs when there is no room in your inventory when you pick up an item.