Ooooooookayyyy................
it's wacky.
I'll be explaining all of the "possibly incorrect" statements step-by-step, if you allow me.
I highly question Painter being one, as he already is a main Gym Leader. You can't be a Gym Leader... and a Elite Four member at the same time, to my knowlegde. unless you love being overworked.
The order... is fine. Balancing power and experience, it's good. I would've exclude Lin, she's not the part of Reborn League (and beating Champion does not make her one; moreover in an "unofficial" battle), but she's definitely do some crazy shit midway.
I would switch Moxie to Intimidate. As Heather will Mega Evolve her ace immediately, Moxie will be useless, while Intimidate may weaken an potential Physical attacker, forcing a switch-out.
In the Pokemon Online League, something like that happened between their real-life counterparts; the first part, of course (if we believe Amethyst)
You made the potentially second match of the Elite Four gauntlet 12vs6 Doubles, then as the leads two Pokemon which know Rain Dance and Sunny Day, on the field where one strong Fire attack will burn it down, with Sun setter being fast and having Prankster, and the Rain setter not having any Priority-Ability, and being slower than a pile of rocks...
Do you see the problem here?
Also... Why Bennett does not have a Butterfree...? I know this is a Butterfree, but c'mon! This is his ace! His signagture! Name me one Trainer who has switched his ace during the events of the game (not during game overhaul, like when rivals now have Alola starters, instead of Unova starters) to prove that I'm wrong. Plus it's very strong here, especially on higher Flower Garden stages - learning Infestation, all kinds of Powders, and Tinted Lens will double the damage of not-effective attacks, and Grass and Bug are the most resisted types of all of them. Plus it has a decent offensive movepool.
That is, uuuhhhhhh... new point of view. While it's like 90% certain Gardevoir is a traitor who somehow really got into relationship with the victim (reverse Stockholm syndrome?), I'd like to believe love will be strong enough to emerge victorious... but considering Radomus considers her as just a friend; in the best case scenario...
In lore, Snorlax doesn't suit him at all. A gluttonous Pokemon owned by old, under-weighted priest-like man... yeah, it's just there for difficulty
I don't like it.
Clefable is already an ace of a major Trainer. Why would you give it to another? Also Elias had already "stolen" Smeargle back in the POL from Noel, so that would be a gut punch.
I think that aces should be unique and not used by any other Trainer in the game (excluding players, they can have whatever they want). I know this is a problem because of how many Major Trainers are in Reborn, and even more in Rejuvenation, but... with all the Fields, and a variety of Pokemon, it's possible to do it - also thier ace doesn't need to be a game-breaker; just that one which suits them.
PULSE Ditto, huh...?
... ... ...
Do you think we were born yesterday? There will be no PULSE Ditto, and if it would be, at least one of us; the community; would've known. There are high chances for PULSE-2 Ditto or Dittoceus (or PULSE-2 Dittoceus), but not PULSE Ditto as I doubt Elias would sacrifice his own Pokemon to that kind of atrocities.
Topsy-Turvy: I'm gonna end this blob's whole career.
But honestly... it's impossible. In Reborn, there will be no fanmade moves, nor fanmade Abilites, to my knowledge. So this idea... is out of the window.
This is possible, but... third 12vs6 in five matches...? No, that seems too cheap. 6vs6 or 7vs6 in Lin's favor and all Pokemon with PULSE2 or boosted PULSE2 is more logical.
And on YT... there's only one "type" of Lin's fight, and players are experienced in cheese'ing it, plus... LEVEL 106 HYDREIGON!? I've gotta know how to do it asap!
As of right now, only one Commader had PULSE2, and that was Solaris. There's a chance for all the other living Admins to have one as well... but we'll see
And the biggest problem... is the existance of Gen 8 Pokemon, items and moves/movesets.
As I recall, there'll be NO Gen 8 in V19 (at least as of right now), so the ones that are, will definitely not be there.
I know, that Heather will be hurt the most with the lack of Heavy-Duty Boots, and also Laura will have to find other Physical attackers, like Leafeon, Tsareena or Leavanny.