We are supportive of this proposal. UST is one of the largest decentralized stablecoins with significant off-chain/on-chain liquidity and a track record of stability. Aave uses Chainlink oracles - according to this list, UST is already supported. Here are some potential risk parameters to start (open to feedback):
- Base LTV As Collateral: 0
- Liquidation Threshold: 0
- Liquidation Bonus: 0
- Borrowing Enabled: true
- Stable BorrowRate Enabled: false
- Reserve Decimals: 18
- Reserve Factor: 2000