Yes however +1 Action must also stay it’s part of my theme for the card.
Could you explain the theme of the card? Village idiot is generally a term for someone who buys too many villages, and I don't really see how that shows here. The theme here is against someone buying any cards? I don't really see the theme here.
Also I don’t think it’s a bad idea to have tons extra coppers. And like I said if you want to avoid the coppers buy a potion. Or nothing.
You do realize that you are in the large minority here, which is why there are heavy trashers like chapel or steward. Also, it would work better if there was a reason to buy potions, for instance you could replace either part of the cost with a potion. And you know that encouraging players not to buy anything leads to much more slog-like games which last much longer and are not most people's favorite games, but if you like copper-based strategies I guess you like that. Not trying to attack you for that, just noting that copper games are often sloggier.
And you may think swamp hag is harder to buy. But not really. Especially if you get to buy it on the first turn. Then the turn after you play it you can easily buy another one.
Actually, Swamp Hag is much harder to buy. You could always, let me repeat that,
always open with Village Idiot, while there is a slim chance of being able to open with Swamp Hag. The jump from even $4 to $5 is huge, so the jump from $2 (even with debt attatched) to $5 is rediculous.
The card is not broken and is a good idea. I just think there are a couple of ways to make it more balanced. Remove the debt cost and make it a normal $5 or something, or add potion to the cost instead of debt or coin, or you could remove the +1 Action. Also, wording thing, I think you need to add (they may choose an option they can't do) to the end of the card, allowing them to gain copper with no coppers left. If you want them to need to take debt if there are no coppers left, (this idea would be bad and could lock people out of the game with it), you could say, they may gain a copper. If they don't, they take 2 debt.
All in all, it is a nice card that needs some finishing up. Nothing wrong with that. I certainly hope I come off more as constructive than critical.