Hello Zach,
I'm worried about staggered gridfunction support, any tweaks that might influence scheduling, reduction operations, and support for non-Lagrange prolongation/restrictions... just to name a few bits of carpet functionality that might not be tested by the qc0 par file.
No such changes are in the pull request. All tests currently pass. I will attach the summary.log to the ticket and take this discussion back to the ticket rather than the mailing list.
Yours, Roland