Unfortunately OP, the chances of that probably dropped astronomically after what happened last year, Nintendo and GF probably have increased their cybersecurity 10x than it was before. Plus as far as I'm aware, everything that was downloaded from Nintendo was re-uploaded last year anyway. Nintendo has also been getting smart with catching people who post their stuff online, like with the one Mario RPG game that was posted online before release, Nintendo found out who it was and took care of it. Same with the people who posted the pages from the SS guidebook a few years ago, again before they had been allowed to be released. Nintendo sued them. Pokemon development appears to have gotten less "amateur-ish" as the games progressed, with the SS leaks showing mostly untextured and uninteresting maps, the only "new" thing was the weird Eternatus/fish 'mon, but that could have just as easily been a place-holder. Which could point to ideas like locations and Pokemon needing to be fully finished before being added in, which looks to be the total opposite of the first 2 games, which the development looked to be more "on the fly" with a lot more being already implemented before being cut, which would be a waste of time. While the LGPE leaks were just an earlier build of the game with an unfinished UI and not much more if I remember. So sadly anything from the newer games wouldn't be as ground-breaking as say lion Porgygon2.
It also is disappointing to see that any discussion relating to the leaks turns into a shit-flinging fest and discussion is often derailed by off-topic nonsense, and anytime people ask for any info regarding such, they get non-answers instead.