The test absolutely warps the traditional 'Boy Who Lived' narrative, and I'm kind of here for it. So many fics use it as a shortcut to make Harry powerful, rich, and politically relevant overnight, which is a huge shift from the underdog story. Suddenly, he's Lord Potter-Black-Peverell-Gryffindor-Slytherin with vaults full of gold and sentient houses. It instantly puts him on equal footing with older characters like Dumbledore and Voldemort in a way his canon skills never could.
But that's also its biggest weakness—it often feels like a cheap power fantasy. The drama from the books, Harry scraping by and relying on his friends, gets replaced with political maneuvering he's magically adept at because of his 'ancient and noble' blood. It sidelines Hermione and Ron, turning them into sidekicks or, worse, gold-diggers after his new wealth. Still, when done with a light touch, it can open up fascinating worldbuilding about magical society's hidden structures, even if the execution usually leans toward wish-fulfillment.