As for balance, it is kind of like Walled Village because I think it's healthy for a card like it to be on the low end of the power curve. It is probably going to lose out to any other village, and possibly even be passed up as the only village sometimes in favor of big money. But it's a Fishing Village with a +buy, so I am pretty skeptical about it never being bought ever. Maybe you like your villages strong though, some people don't like Walled Village, and it is in fact a promo. That's a reasonable place to be.
I'm kind of going to give up on the clarity issues. I mean, it's a replacement effect, just like Trader. And Donald changed his mind on his own interpretation of Trader, let alone all the people who tried to figure out Trader+Ironworks on their own, so if you want me to execute a replacement effect idea I have without any ambiguity at all, you're holding me to a higher standard than Donald. And if you're going to do that, I would at least like to make 8 bucks an hour or something.