I agree with this. I think it does not matter as much what is used as a peg, just that a peg works. As you outlined in your article it can be improved right now. Thank you for working on this.

i think ultimately there should be different indexes, that Sbd may be pegged to and witnesses or even better SP holders should be able to vote on what the peg will be. I.e. We could implement a rule that 70% of votes need to vote for a new index, for it to take effect, with a transition phase to make it all smooth.

I'm sure in the future a basket of crypto, gold and stock indexes may make sense, but who knows.

The key is that we make the peg work, once that is accomplished, switching the peg to a different indicator should be easy.