I don't think adding more mandatory tedium would be necessary, but having the same base durability/speed of early game tools, and then you could forge it additionally to make it stronger. That way it's unnecessary but you can do it if you want stronger tools and are willing to invest the time. You could get a special oil somehow that you could use to temper your Iron Tools better, or make your copper tools last a little longer or faster.
Thinking about this more, I think this would serve to benefit early-stage copper tools. I was playing the other day and I remembered forging copper and bronze tools from ingots is actually less efficient than simply pouring the mold. Maybe adding a better system of tempering to the early game tools would be good. It's optional, but another path for you to take if you want slightly stronger/faster early game copper/bronze gear. My idea would be to have the molded copper/bronze tools have the same durability they have now, but if you were to craft them on the anvil you could temper them or forge them in a way that would give them higher durability or better speed.