Hey,
DugTripleban thought I'd drop some thoughts on your team. I decided to give this a rate even though Beta is going to release very soon as I don't think much is going to change other than Gengar most likely getting the boot. Overall your team looks really cool though there are some things I want to point out before getting into some suggestions. I'm not too sure what Sirfetch'd's purpose is here as it isn't really contributing much with Crawdaunt being the breaker on the team and given they can break the same stuff (More or less) it seems rather redundant. Personally, I think Claydol is way too overhyped right now but even if this isn't the case, making it fulfill the roles of both entry hazard removal and setter puts too much pressure on what this Pokemon wants to achieve defensively. For a team built around the core of Crawdaunt + Rotom-C, not having a reliable pivot into Kommo-o is odd given it checks both of them.
Major Changes:
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: Noivern does a few things for your team here. It acts as your new form of entry hazard removal with Defog and gives you another way to pressure Kommo-o, which you previously lacked real responses to aside from Dazzling Gleam on Gengar. Noivern gives more Speed control to your team allowing it to revenge kill threats like Gengar behind Substitute and is a solid option for getting hazards off the field when playing against Webs Offense.
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: Copperajah gives you more counterplay to Pokemon like Indeedee and semi-checks scarf Gengar for you. It also gives you a response to stuff like Polteageist, Noivern, and Frosmoth a bit better to just make these matchups easier. The given EV spread I made, which creeps Doublade and Quagsire and the HP + SpD EVs allow you to avoid the 2HKO from Specs Indeedee Psychic. Feel free to run Earthquake over Heat Crash as an option also.
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: As I said above this Pokemon seemed redundant and your lack of counterplay to Kommo-o is rough with what you built around so I recommend using Sylveon here. It gives you a good pivot into it as well as other Dragon-types like Haxorus for instance and its good natural SpD allows it to check an ample amount of threats for you in this role. Copperajah also appreciates the Wish support greatly here. Pretty standard set though I recommend using Moonblst to deal with Soundproof Kommo-o. Sylveon also gives you a decent way to play around opposing Crawdaunt.
Minor Changes:
(Move Change): I would recommend using Trick over Destiny Bond here as crippling bulky walls like Umbreon is really nice for breaking past them easier. Destiny Bond is a cool tech but I find it revenge kills everything it needs to already.
(Optional Change): Nasty Plot is an option worth considering over Will-O-Wisp as it can make Rotom-C an effective wallbreaker on top of being able to check shit like Milotic etc.
(EV Spread Adjustment): I don't see the need to not run max Speed here. It speed ties with other Crawdaunt and lets it outpace uninvested Pokemon like Milotic. This is just a nitpick so take this as you will but the HP investment here seems irrelevant.
I hope you consider/like these changes. Some things worth mentioning are you could try Alcremie over Sylveon if you wanted for Aromatherapy support or as a potential wincon with Calm Mind. You could also consider going Choice Scarf Rotom-C and Nasty Plot or Choice Specs Gengar here depending on how you feel about the Polteageist matchup as that's the main selling point for Scarf Gengar on this particular team. Opposing Gengar will be your hardest matchup but you have enough means to revenge kill it and pivot into it a few times.