Here is what I think we should remove (in no way is this undermining the deck building skills of whoever built them, but just decks that aren't not suitable in my opinion for this thread)...
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Poliwrath/Salazzle: I get the overall point of this deck, but I believe that it is tp hard to set up and continue to stream attacks to the point where it can be competitive while drawing into the cards you need consistently.
Politoed/Poliwrath: This deck can't keep up with decks to the point where it can be competitive, not to mention that it is Expanded.
Areodactyl/Talonflame/Tauros GX: One of the major issues with many of these decks is consistency and I believe that this deck isn't consistent enough to keep up with other decks and stream attackers.
Alolan Raticate: Even with the ability to attack for free, I don't think that the amount of damage this deck is doing is sufficient enough to be competitive.
Lucario/Drampa GX: Though this deck can deal quite a bit of damage, I don't believe that it can consistently deal those attacks with the energy requirements of Lucario and set up another attacker at the same time.
Areodactyl/Talonflame/Omastar: I believe that there is to much going on in this deck in order for it to set up consistently and repetitively stream attackers, especially since the highest possible damage you can deal is only 120.
Guzzlord GX: This deck isn't really competitive enough to deal with decks consistently, especially since your not guarantied another Guzzlord GX to attack with.
Alolan Exeggutor GX: I get the strategy, but I don't think that this deck can consistently set up with the amount of evolutions it includes and almost no draw support (as in abilities like Trade or Abyssal Hand).
Electric Box: I don't think that there is enough power in this deck that can be consistently set up each game as it seems there are to many strategies going on (which can affect your consistency in general).
Metal Box 2: If you can increase the draw support and energy acceleration, I don't think this deck would be too bad, but I don' think that this variant has enough of either.
Gengar/Decidueye GX: I believe that there are to many evolutions and not enough draw support for this deck to work efficiently, not to mention damage output. Maybe stick with just the Decidueye GX or the Gengar, but not both in the same deck.
Mew/Mewtwo GX: I don't believe that Mew (EVO) is an efficient way to stall out opponents, especially since it can be K.Oed by a Tapu Lele GX with Energy Drive.
Mega Beedrill EX: The concept of this deck in general is ok (though Guzma gets the opponent out of Paralysis), but the cards in this list aren't an efficient way to keep up the strategy each turn, especially since it requires setting up a Venusaur first.
Tapu Koko GX/Raikou/Drampa GX: Without draw support (like Abyssal Hand) I'm afraid that this deck can't draw into the cards that it needs consistently and keep up with other decks.
Miltoic/Tapu Koko: Even though this deck removes threats, it doesn't really have a way of winning besides decking out the opponent, in which it doesn't even play cards to do so.
Durant/Pheromosa GX: Even though this deck is built pretty effectively, I'm not sure that it can set up without your hand being clogged up by things such as Crushing Hammer or Aether Paradise Conversation Area. Not to mention that Durant only has 70 HP, which is pretty easy to K.O. unlike Sylveon GX.
Marshadow GX Box: Though this deck isn't bad in Expanded, I'm afraid there aren't to many assets that it can use in Standard. Without cards like Battle Compressor or Acro Bike, there isn't much you can do to lower consistency issues.
Regigigas/Alolan Muk: This deck comes with a lot of consistency issues and no real way to search out Kiawe while setting up more attackers/Alolan Muk.
Aggron/Zoroark GX: I believe that this deck has a few issues with consistency since it is trying to set up quite a few things at the same time. I don't that the effort put into setting up Aggron is worth just the one attack, especially since your not guaranteed it every game.
Agrron/Friends: Same as Aggron/Zoroark GX, there is to much going on in this deck in order for it to work effectively.
Zoroark GX/Haxorus: Since the set up for attack takes two turns, I don't think that this deck can keep up with other decks efficiently enough to be competitive.
Alolan Raticate/Hoopa: Same as the other Alolan raticate decks, there isn't enough damage being dealt in order for it to keep up with the opponent.
Mewtwo EX/Lunala GX/Drampa GX: I think that there is to much this deck is relying on and not enough cards to get it to that point. With some many strategies going on consistency can be an issue.
Talonflame/Reuniclus: I don't think that the damage output is enough on this deck in order for it to work efficiently and take K.O.s often against the opponent. Basically the same thing as Alolan Raticate.
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Decks that I think should be revised/edited before entered into the thread...
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Ultimate Metalbox: Cool idea, just fix up a few things such as removing the many techs included (try to make it as consistent as possible), add some draw support, and throw in Rare Candies (which is the card this deck is missing) and this deck would be good to go!
Zoroark Break/Drampa GX: The idea for the deck is fine, just this list isn't consistent enough to fit the bill. Maybe if we can switch a few things, than I would be fine with it.
Regibox: I think this deck has potential, but this list isn't the best it can be. Maybe I can fix that at some point.
Trevenant Break: The main problem I have with this deck is including Trevenant Break, so if you can remove that and just have a Garbodor/Trevenant deck then I don't think it would be too bad.
Slowbro Box: The idea sounds fun, but I don't know if the list is at its full potential yet (maybe include more draw support so you don't leave yourself without a hand the next turn).
Golisopod GX/Turtonator GX: The main thing I regret with this deck is not adding Octillery or Oranguru. I might remake the deck with consistency in mind and hopefully it will be at its full potential, but right now I don't know if it can keep up with most decks.
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Once we decided on what decks will be kept, I will rate the decks on competitiveness (such as beginner, intermediate, and advanced) along with price (such as cheap, moderate, and expensive). Let me know what you think, thanks!