I hate to point this out, but the cathedral thinking idea is just working on something you're likely not going to see finished. The original baggage is irreleva

I hate to point this out, but the cathedral thinking idea is just working on something you're likely not going to see finished. The original baggage is irrelevant to the metaphor. In fact, that's the point of metaphors - being able to take the core idea while understanding that the particulars are superfluous.