I don't think my witness crew will be doing actual core blockchain development for a while, if ever.
We'd rather build on top of Hive the work on the foundation.
Same is true for most of the devs around here.
Working on the foundation requires permission from the witnesses.
So if we wanted to make something like this it would have to be a permissinless token.
This makes LEO a good focus of the experimental tech.
RE: HBD Collateralized Loans: How to reduce Hive inflation to zero percent without hurting the reward pool.