Out of curiosity: are the issues you note here (and the ones in the linked comment) absolute hard stops for you, or more of a checklist of heuristics to take into consideration?
They're heuristics, but failure on them is extremely predictive, and for the n>25 ventures I had personal experience with, have a fitness of ~99% predictive power.
You seem to be an unusually clear thinker, and I have an idea, but I'd fail miserably on a fair number of these metrics, though for non-typical reasons I'd say.
What inspired that question?