Interesting. Only thing, from someone who has built something similar, is that it moght tend to duplicate certain capabilities that those harnesses handle on their own. Some overlap is bound to happen.

This, and also they have to chase changes in model tuning and capabilities. I have a nice little meta-harness focused on product development (requiremwnts, acceptance criteria) for Claude code, and when major new models come it it’s weeks before I can find and fix constraints that are no longer necessary + constraints that have become necessary.