It's an interesting concept. My my how programmable money is changing the game of living. Barely the tip of the iceberg too...
I read this paper a couple of months ago of a concept in the same broad category:
New Crypto-Secured Lending System with a Two-Way Collateral Function
Just realised where I've seen your account name before: the HiveInvite project?
Interesting, a loan on a short basically. Way too risky for my taste, but now I wonder why that doesn't exist yet.
Yes, I made hiveinvite back when there was no onboarding option besides steemit. There are better alternatives these days I think.