Maniac
Apolyton Sage
Some more reasons why I personally consider Mithril Working a fitting tech:
1. Machinery already gives windmills an extra hammer. If you give mines an extra hammer there too, you only have two possible hill-terraforming research strategies: research towards Machinery, or towards Druids + lumbermills. Placing the additional mine hammer with Mithril would create three possible tech paths to follow. And in general, the more choices, the better IMO.
2. Machinery already is a good builder tech due to the Machinists' Shop that gives +20% minerals. On the other hand, all those endgame techs are currently only beneficial for military players. So giving some extra bonuses to late game techs such as Mithril Working livens the game up a little for builder players.
1. Machinery already gives windmills an extra hammer. If you give mines an extra hammer there too, you only have two possible hill-terraforming research strategies: research towards Machinery, or towards Druids + lumbermills. Placing the additional mine hammer with Mithril would create three possible tech paths to follow. And in general, the more choices, the better IMO.
2. Machinery already is a good builder tech due to the Machinists' Shop that gives +20% minerals. On the other hand, all those endgame techs are currently only beneficial for military players. So giving some extra bonuses to late game techs such as Mithril Working livens the game up a little for builder players.