I am supporting @sbdpotato and don't think it's useless but I strongly agree with all your proposed changes for better SBD pegging.
I personally think printing rate should start declining linearly at 0-2% market cap instead of 9% right now or even 5%, haircut stays at 10%. The change from 5% to 9% last HF is the biggest culprit of the peg as broken as it is.

Too bad SBD pegging mechanism won't be implemented next HF, too busy with SMT. So, potato for me for now.