Recently we've seen, and I'm sure we will continue to see, large "leaks." A couple in the past have proven to contain some true information before it was officially revealed to us, which is very promising. In the past two days, Youtuber aDrive has uploaded a couple videos showing full Pokedex leaks with typings.
I would say these leaks were already busted as soon as they said it was the full Pokedex. No way at this point would a full Pokedex leak be available.
And yes, I know some counters people would give for that opinion. "But what about the Alolan Starters being leaked 8 months early"? "But what about the entire Alolan Dex having been datamined"? But I feel those are special cases and not to be the expected norm. For the Alolan Starters I think that was a once-in-a-blue moon situation. Don't know how the leaker got it, but I doubt they or anyone else would do it again because GF would be extra careful about who gets to see the reference sheets. As for the Alolan Dex datamined, that was an oopsie on GF's part because they forgot to scrub the shiny dex images and so don't expect them making that mistake again (notice how they haven't even said a word of a demo besides the ones only in stores and exclusively focused on the Water Gym?).
"But what about the recent leak which is proving to be all true"? We've had leaks like that before and I consider those leaks more of the standard. Just a slathering of information with no real rhyme or reason. It may tell about new Pokemon, characters, and mechanics coming up but the reason we know its true is because all the info on it is released as pre-release information. This likely means this information may have been given out to advertising staff of GF and Nintendo that the leaker has a connection with so it's less of a leak and more of them getting their hands on the scheduled announcements and telling us everything planned ahead of time. And even then it didn't have all the information new announcements have told us about.
The only time I'd believe a full dex leak is when the games are just about to release because that's usually when you hear someone getting their game early somehow and either recording the new Pokemon they encountered while playing or datamined the game files.
If Slaking is in Galardex, Weezing with it can wreck things, can't they?
Oops, forgot about Slaking in my last post! Yeah, it and Regigigas would be prime Neutralizing Gas partners (I wonder when Galarian Weezing leaves what would happen with Slow Start; would it restart, begin where it was stopped, or is it just off now. Sadly Slaking would still start skipping turns again)
Eject Pack seems like a godsend to Pokémon who like to use strong moves like Draco or CC but lack access to Volt-Turn. I can see the Latis running this.
Huh, I didn't think about using Eject Pack for self-induced stat decreases. Don't know why, that's how it was presented in the trailer *facepalm*. Okay, yeah, so it definitely has a niche there. Just hope you can pull it off before another stat decrease occurs.
Also, we get to have a glance of the new Pokemon moveset:
Corviknight: Lot of Dark-type moves, though I guess makes sense being possibly based on the Black Knight.
Alchremie: Geez, GF. I mean, yeah, I joked about it being the next waifu Pokemon, but that was a joke. But good to know your suggested strategy is infatuation confusion, that isn't an annoying strategy at all.
Galarian Weezing: Why would you have Explosion on one with Neutralizing Gas... WAIT A SECOND! Sludge Bomb and Fairy Wind? Special moves, on Weezing who normally has a higher Attack stat (well, by 5 points, BUT STILL COUNTS)? Is this confirmation that Galarian Weezing stats were altered to make it a Special Attacker now (among hopefully other changes)?
Drednaw: ... Why does Drednaw have Room Service when it nor any other of its partners have Trick Room? Also nice they at least gave it Crunch so Strong Jaw doesn't go completely unused (though this makes me wonder if there's no Water- or Rock-type biting move for it to get STAB from).
Duraludon: Was there other better moves for it than Hyper Beam and Metal Burst? Kind of looking like a one-trick pony.
Obstagoon: We need a Dark-type recoil move. Anyway, yeah, that's exactly what I imagine a Obstagoon would be setup as.
Meh, I was hoping for pokemon tiers (much like smogon) instead of trainer tiers.
GF would never admit one Pokemon is superior/inferior to another, especially now that they could just exclude them no questions asked.