I'm more and more convinced that the simplest way out of the debt-ceiling morass would be to start issuing perpetual bonds or consols (sometimes dubbed "Peter-Pan" bonds, since they never mature or grow up )which simply offer a fixed payment every year, with no face value. This would seem to be immune to court challenges -- unlike the constitutional gambit or the platinum coin. The Republicans in the House are manifestly crazy, so there's no hope there.
One question is how much bigger the term premium would be to borrow longer term in this way.
Let’s get the up-or-down part of this review over with quickly: Escape from Model Land: How Mathematical Models Can Lead Us Astray and What We Can Do About It by Erica Thompson is a poorly written, mostly vacuous rumination on mathematical modeling, and you would do well to ignore it.