seems like a very good early game power set up that would fit right in! the windmill is awesome, but all that flax is hard to come by when you just get started, and waterwheels are an even more primitive tech that we've been using for way longer. Especially considering the new water-based updates, i dont see why not (unless to stay away from cliches in That Other Block Game... >_>)
i guess balancing would be an issue, but having an opportunity to "scale up" without cheesing it (1000 block high windmills for that sweet max powa) would integrate the mechanics system more firmly into the game. maybe water-wheels are less efficient output wise, have a max amount of machines you can attach to them, or even unable to do certain tasks entirely.
just been something ive been thinking about. thoughts?
edit: just read through and saw this is both mentioned in the faq and the roadmap, which is very exciting!