I have said before that one of the missing components of the SBD peg is the inability to short. That is, the inability of the internal platform to support borrowing SBD into existence.
But I didn't really think about the exact mechanism. I just imagined how bitshares pulls it off for smartcoins.
It would probably make sense to look at other (more successful) implementations.
I'd be interested in seeing this happen in some future hardfork, say, HF25. 😄
RE: Proposal of how to stabilize SBD