I think Crawdaunt will do really good this Generation. Might be even good enough to hit BL.
Azumarill vs Crawdaunt
I thought Crawdaunt was rather mediocre even with Adapdability. This generation, it all changed. It got Aqua Jet which is simple amazing, since it can revenge kill threats now, making it probably a better Azumarill this generation. I never like Azumarill ever since Crawdaunt got Aqua Jet. Azumarill only has about 606 Atk (iirc) and Crawdaunt has 558 Atk. Sure, it's a big difference, but they both do the job they are supposed to do, and Crawdaunt has 80 BP on Aqua Jet compared to Azu's 60 Bp on Aqua Jet. Crabhammer to 100 BP (200 with STAB) is simply amazing. Crawdaunt has the strongest physical Water-type move in the game. Knock-Off being 97.5 BP (195 with STAB) is amazing as well and also cripples the survivers of it by removing their item. This could be big, since if something that can MEvo loses its Mega Item, then it won't be able to MEvo. Some PKMN are useless without their stones (Ampharos, Pinsir) or considered bad PKMN like Houndoom. Now, Superpower is pretty nice, but the sheer force of Crabhammer and Knock-Off make it largely ignored. I would use Switcheroo in the last slot to cripple some of its counters or just to make some PKMN that force Crawdaunt out useless. Switcheroo has seen the most appealing in the last slot IMO.
The Swords Dance set... I have mixed feelings about it. Sure, it's a really good sweeper (easier to set-up than Belly Drum Azu), but I like the wall-breaking utility the Choice Band set. Swords Dance is really good on HO teams, since their are a lot of Hazards. The Dragon dance set is now complete trash, since Crawdaunt got Swords Dance + Aqua Jet combo, which sweeps easily by itself. With rain support, CB Aqua Jet can sweep by its self with Sr + at least 2 layers of Spikes
I feel like that Crawdaunt and Sharpedo were the main winners of the Gen 3 PKMN with the X/Y transition. Sharpedo has nothing to do with this, but it got Destiny Bond, so it has risen in usage greatly and is much better IMO.
EDIT:
Ogami The Dragon Dance set is honestly really bad. even after a boost with Jolly Nature, it fails to outpace stuff like Terrakion and Latias which is sad. Priority makes it a waste too even if you get it to +2 Spe. Stick with SD Aqua Jet.
Crawdaunt | Mystic Water | Adapdability
Adamant | 252 Atk / 4 Def / 252 Spe
Swords Dance | Aqua Jet | Knock-Off | Crabhammer