It is desirable to onboard new collateral types that are uncorrelated with the price of ETH to create a more diversified collateral pool and to be better able to withstand drops in ETH price. A problem is that many of these uncorrelated collaterals (e.g USDC, DGX) have a centralization risk that people are uncomfortable with. (wBTC also has this same problem but is arguably highly correlated with ETH).
One solution to this problem is to use e.g synthetic XAU or even sUSD, sBTC from Synthetix. (I know some people view this as a competing platform, but let’s ignore this issue for the sake of discussion.). These synthetics are decentralized and their security depends primarily on the price feeds and the value of SNX (currently they require a collateral ratio of 800% to back the synthetics). They also have the advantage that they can be auctioned instantaneously at the spot price and do not require separate markets with their own liquidity.
What do people think about using sXAU, sUSD, sBTC as collateral types to improve collateral diversity without having to worry about a centralized authority that can either steal the stored collateral or black list maker deposits?