Sounds like an interesting one to keep an eye on, perhaps even have a discussion with on areas of cross-fertilisation. From my glancing through the whitepaper, sounds like they want to create a cash-like coin, dubbed USD coin, for betting. The whitepaper suggests this would be done by printing more of the token when demand is high (and price above $1), and ceasing to print when demand is low (price below $1). Of course this is only asymmetric flexibility in the supply, and does not peg to a USD when demand is falling. Maybe they could be approached on using bitUSD instead.