Switching weapons ought to be improved, the pipboy is just adequate as an inventory, but having only the pipboy to equip weapons, that's just bad design. Since you typically carry dozens of weapons for repair mouse wheeling won't work. How about scrolling through a melee slot, a pistol slot, rifle slot and a big guns slot instead, and have the weapon degradation at a more reasonable pace so you don't have to micromanage repairs every time you fired off a few shots.