Under the guise of an answer, he collates known remakes. Surprisingly, there aren’t that many, although the only item that I see bypassed is Tenchi (where TV series borrowed heavily from the OVA).
By the way, I’m pretty sure that the questions he uses as an excuse are real. A reader once asked me “Why do Edo-era and older farm buildings have large rocks on their roofs? Lack of nails?”