Provide test cases as PKCS #7 alongside JSON

Would it be possible to make the test cases in limbo.json available as binary PKCS #7 cert chains (where it's appropriate, i.e. where the test case is certs)? What I'm thinking of is taking an entry like "pathlen::ee-with-intermediate-pathlen-0" and writing the chain to "ee-with-intermediate-pathlen-0.p7c". This would make it possible to integrate into existing test frameworks without having to write custom harness code to feed it from the JSON file, and also makes it easier to debug problems because instead of the harness reporting "thing X passed when it should have failed" and then you have to figure it out from there, the test framework can provide its own diagnostics on where the failure occurred and what it was.