This proposal asks whether a USD stablecoin, Paxos Standard ($PAX), should be added as a whitelisted collateral asset to mUSD's basket after mStable's new Incentivized Constant Sum Market Maker AMM is deployed for mUSD, anticipated to occur in Q1 2020.
Those for the proposal noted the benefits of including another fiat-currency backed stablecoin, a stablecoin with high liquidity (currently ~475,000,000 as of this writing), opening mStable SWAP to potential increases in swap volume, quick (sub-90 minutes) issuance and redemption, among other arguments.
Those against the proposal noted that PAX is issued by a single firm, Paxos.
You can view and engage with the discussion in the forum here.
Should $PAX be added as a whitelisted collateral asset to mUSD's basket after mStable's ICSMM is deployed for mUSD?