There's been quite a few discussion about future suspects in chatrooms and KyleCole's youtube vids, so I don't see why we can't have one on the forums. The contested Pokemon are: Skymin, Kyurem-B, and Hoopa-U.
Disclaimer: whether to ultimately put these mons for trial is left to the council's decision.
I am going to first focus on the former two that have been around since the very beginning of Doubles. I think we can all agree that those two are handled adequately by our current metagame, and we should not bore each other by listing all the things that they can and can't do. They aren't "broken" in the classical sense, which increases the difficulty in classifying them as OU or Uber. However, as the competition in our community has ripened over the years, the impact that these two mons make in battles are quite obvious. So I think an important question to ask when considering the fate of these suspects are... "do they affect the match or the metagame for the better or for the worse?"
What makes the metagame better? We all have our own opinions about this, and here is mine - a good metagame is balanced, diverse, and competitive. Centralization is necessary for balance, but not to the extent where it applies a massive stranglehold in teambuilding. A competitive metagame is where a luck-based, unskillful strategies, which reduce the game into a pure dice roll, are eliminated. OHKO and Moody being a classic example. Do note that some amount of luck/second chances are actually desirable in a game of Pokemon, as mitigating these chances is part of a player's skill
What makes a match better? A good match would be a game where the player who played better wins. A good match is where the fate of the game isn't decided by team preview (unless the team was poorly built).
So do Skymin and Kyurem-B influence the metagame for the better or worse?
- Skymin -
As its popularity increases, the effect it has on tactical play becomes quite evident. Its Air Slash flinches are game-changing, esp. with its 127 base Speed. Unlike Togekiss, it doesn't need to set up Tailwind to start flinching most of the metagame, and it is a lot harder to take the offensive when bombarded by powerful STAB Seed Flare and amazing coverage Earth Power. Focus Sash is its best item, and has made it even more difficult to eliminate Skymin (unless sand/SR). One can argue that Skymin can only attack/flinch one mon at a time, which leaves it vulnerable to the second mon. However, oftentimes Skymin can flinch/finish off one mon to create an optimal 1-vs-1 match up for its partner.
Of course there are solid answers to handling Skymin in a battle. Thunder Wave, Trick Room, and priority Brave Birds/Ice Shard are definitive ways to shut down Skymin. I also don't think that it's hard to account for Skymin in teambuilding, either, as it has many exploitable weaknesses (two of them being the most common spread moves in Rock Slide and Heat Wave). I also find Skymin's ability to check Mega Diancie, Azumarill, Rotom-W, Amoonguss, and maybe CM Cresselia as a positive influence to the metagame. However, I believe that its fast flinches may have an overbearing impact to our matches and outweigh its positive aspects. I am still on the fence about Skymin, which is exactly why it is suspect-worthy.
- Kyurem-B -
To be blunt, I believe Kyurem-B has a positive impact to the metagame. It hardly restrains teambuilding, as it is susceptible to virtually all common spread attacks and a good half of the metagame can scrape off lethal amount of health/outright KO. It has middling base 95 Speed, which puts it below top threats like Hydreigon/Kangaskhan/Charizard/Terrakion/Keldeo/Latios/Diancie/Metagross, all of which will beat Kyurem-B's best set, more often than not. That's why Kyurem-B's best set is Substitute, to protect itself from these common meta threats that will otherwise destroy it.
What makes Kyurem-B good for the metagame? I believe it adds a nice check-and-balance to mons like Rotom-W, Landorus-T, Thundurus, and Amoonguss that are prevalent in our metagame. Removing Kyurem-B wouldn't change the metagame much outside of making these four threats a lot more centralizing. These mons are already enormous teambuilding constraints already - why would we want to make them even better? Kyurem-B puts these mons in check, without breaking any offensive or defensive thresholds of OU (no, IB + Terravolt EP coming off of 120 SpA/95 Spe is not some unbeatable combination that Doubles cannot handle | and no, Dragon/Ice isn't an exceptional defensive typing either).
Kyurem-B is undoubtedly a stellar mon and a Doubles staple. Same can be said about Heatran, Landorus-T, Rotom-W, Aegislash, and Amoonguss, arguably moreso than Kyurem-B. These are all exceptional mons with a distinct and powerful niche in this metagame. I don't understand why we're singling Kyurem-B out, which is by far the least restrictive force in the game. Heck, I find Azumarill, Talonflame, Thundurus, and Diancie much more suspect-worthy than Kyurem-B, for being a greater choice-limiting force in teambuilding and in battling. To me this gorilla dragon is not suspect-worthy, let alone ban-worthy.
-Hoopa-U -
It hits hard with 160 Atk / 170 SpA and possesses two decently powered moves to break past protection moves. However it's meddling base 80 Speed and shoddy physical defense leave it vulnerable to opponent's moves moreso than the top dogs of DOU. Furthermore, Dark/Psychic does not supply it with any particularly useful resistances, outside of a Psychic immunity. Absence of priority moves doesn't help its sweeping potential either. It seems to have similar problems as other hard hitters stuck in an odd speed tier, such as Mega Heracross, Mega Garchomp, and Chandelure, except these mons can actually switch into moves. Despite its 680 BST and protection-breaking moves, we can hardly consider this mon uber material, due to the unfortunate shortcomings of its stats distribution and typing.
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Reminder: Having BST above 670 should not be considered a valid reason to ban anything. It looks at the Pokemon in a vacuum, without any context to the Doubles metagame whatsoever. When we hear things like, "Nintendo did NOT intend for Pokemon with 70+ power gap to be playable in OU," we can't help but shake our heads, b/c such a comment fail to
judge the suspect under the context of the DOU metagame (I can actually see Nintendo's "intentions" were to restrict the potential of KyuB and Hoopa-U quite clearly, but again, this is an irrelevant point). Not to mention, as Joim and I initially laid out, Ubers can be tested in DOU if there is convincing belief that it would not be overcentralizing; they simply blend right in (not breaking any offensive or defensive thresholds of OU) with plenty of its checks amply present in currently standard teams.
Hoopa-U definitely fits the bill here, as well as Kyurem-B. The rest of the ubers you will have a much difficult case justifying its drop to DOU.
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I hope this post will spark some discussion about potential suspects in the right direction.
Please consider these metagame aspects for your future tiering policy endeavors, fellow Doubles contributors.