I don't think most people will do this, and most proposals are grossly over priced even at $1 HBD.
If they don't feel like doing it they can just use good-karma's script though. There is no "one solution fits all"
Another idea is just have the DHF print the appropriate amount of HBD based on current price.
As I mentioned in some other comments this would require a second price feed for hbd which is kind of an aberration because it would mean that we agree that we failed to peg hbd for good. This is more about treating the symptoms (dhf paying too much) than the cause (hbd not pegged)
RE: My take on the increased HBD price and it's impact for proposals