Always makes me pause when stuff like this is set while Goku is still alive. Don't get me wrong, he's away all the time, so it's not even that. But if you're going to do this to the strongest man alive, I'd at least wait until he was dead. Which he was, for years. Though I guess it's arguable at what point Oolong would stop lusting after Chi-Chi as she ages. Particularly with Videl around.
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To be fair, death doesn't stop Goku from coming back to Earth on occasion, especially during the original DBZ anime. Sure, it's mostly to fight world-ending threats, but he did get a pass to witness the World Martial Arts Tournament. And I believe he was even revived afterwards too.
Sadly, Goku's shifting intelligence for anything outside combat leaves me to believe he wouldn't be great under 'Hentai trope/logic' rules.