I know the idea of a card straight-up giving you VP for curses is awful, but I've always liked the concept. I was thinking recently, could it be salvaged by making it an action card? An idea I had was
[Insert Name Here]
- Action/Victory
+1 Card
+1 Action
+1 Buy
-----
Worth 1 VP per Curse you have.
This card won't use up space in your deck, and gives you the extra buys you might want to pick up curses. It can still be useful in Kingdoms without any other source of +Buy. Is there something stupid about this idea, and is it salvageable at all if it is stupid?