I'm in support of the @hbdstabilizer method.
AFAIK the curation rewards that the voters get would be the about the same if they voted on other content. They are just earning a lot of curation rewards because they have a lot of stake. The same stake voted for other content would result in equivalent curation rewards.
I don't really have any suggestions for better ways to manage the peg righ tnow. There are conversion mechanisms in place in both directions now, so stakeholders can buy the overvalued side and convert to the undervalued side as much as they want. There is risk there though, and there just don't seem to be enough stakeholders willing to take the risk with their own funds.
The nice thing about the @hbdstabilizer method is it is very low risk, and it actually generates a profit back to the stakeholders (via the DAO) as an added benefit.
It works really well for all of us when HBD is over $1.00 because that means it is continuously buying lots of HIVE on the open market which helps push up the HIVE price.