The mechanism of unlocking existing buildings rather than creating them is interesting, I don't think I've ever seen that before.
Gameplay was frustrating before I had the two blacksmiths because I couldn't stop clicking long enough to even look at what was possible in the village. But after that it was a little dull.
To hold my interest I would need to be able to move on from the clicking mechanic pretty quickly to something else with more strategic depth like maybe tower building or making defensive units at a barracks or something.