I seem to do this a lot - I’ll find a game whose setting I really like, but dislike the ruleset it uses, so I end up converting it over to the ruleset I prefer (usually Cypher System). I’ve learned that to some people, this is blasphemy of the highest order, which is surprising. I still do it, though. 😬
I mean, I liberally plumb other systems for content in general, so relatively all the time. Mechanics, setting, anything I can pull that sounds good to me.
Your game table must be a lot of fun. :)