Define obviously validation? What is the signal that tells you one is reasonable vs another?

I find the only way to do that is to look at it, if it passes some visual tests, try it, and then a/b test if it's any better than without it.

The OP evaluates what it has developed with great rigor and describes the evaluation in detail. What do you feel is missing?

Skill-slop.

SkillBros?