Just a quick thought about Alchemix and how we might be able to do it better on Terra.
Right now afaik, Alchemix lets you take out a self-repaying loan using DAI as collateral to borrow alUSD at <50% LTV. Behind the scenes, Alchemix deposits the DAI in Yearn vaults to earn yields, which are then used to pay back your loan.
Personally I have a hard time seeing why you would want to collateralize your stablecoins to borrow less stablecoins. But putting that aside, I think it would be interesting if we could do the same thing with bLUNA and UST.
In essence, I am proposing a protocol for self-repaying UST loans collateralized by bLUNA (or other supported PoS staking assets down the line), where the yield generated by the bLUNA would be used to pay down the loan. Basically this would be like Anchor except that the yields from bAssets are used to repay loans instead of being diverted to UST depositors.