I personally agree with this idea, give it some more thought and add names and bonuses. Then hope for the best This would definitely make everyone's builds more unique and will give more of a variety. For those saying no, please could you give a reason?
This is a good idea but it'd only work if it was the same as troop buildings. Each should have its pros and cons and not just different stats E.g. Having one with a small increase in plunder, another with extra hits and one having a high attack stat.