I actually think Aromatisse has a lot of potential in NU. It looks pretty solid defensively; 101/72/89 defenses aren't the best in the world, but with defensive investment, they're really quite good. Heck, Skarmory gets away with running specially defensive sets even with 65/70 special bulk because of its great defensive typing. Likewise, Aromatisse's pure Fairy typing is pretty nice. It's weak to Steel and Poison (no telling just yet how common those will become), but it does have great resistances to Dark, Fighting, and Bug moves, as well as a Dragon immunity. Being able to pass 203 HP Wishes and heal its teammates with Aromatherapy gives it a lot of support utility as well. Aroma Veil is also a really cool ability since it prevents Aromatisse from being Taunted, which is a real boon for a defensive Pokemon. It isn't half bad on the offense, either. Base 99 SpA is more than usable, and it happens to have Moonblast, the best special Fairy move it could possibly want. It also has a pretty colorful special movepool with coverage options like Thunderbolt, Psychic, and Energy Ball, so a Calm Mind set seems feasible. In fact, the only Pokemon in 5th Gen NU that would have resisted the Fairy + Electric combo are Camerupt and Grass/Poison-types like Roselia and Vileplume, and the latter can be handled by Psychic.
I'm actually pretty interested in seeing how Aromatisse's counterpart, Slurpuff, will play out. Defensive sets are probably going to be outclassed by Aromatisse. While Slurpuff has a bit more physical bulk, it has considerably less special bulk and a lot less HP for Wish passing. Offensive sets might show some promise, though. Base 85 SpA is a good bit lower than base 99, but Slurpuff does have a few move options that Aromatisse does not, namely Flamethrower and Surf. Its base 72 Spe stat isn't great by any means, but it will at least let Slurpuff beat many slower and bulkier Pokemon. Sweet Veil also helps it switch in and set up a little more easily since it doesn't have to worry about sleep moves. I'm also interested to try out Unburden. While it may not work as well on a special set, Belly Drum Slurfpuff with a Sitrus Berry and Unburden might have some potential. Even with just 80 base Atk, a +6 Adamant Slurpuff's Play Rough is doing 72.47 - 85.39% to 252/252+ Alomomola. The biggest problem with such a set is its physical movepool; it doesn't really have one. All Slurpuff has on the physical side is Play Rough and Return. It's still enough to hit pretty much every non-Steel Pokemon neutrally, but you'll have to remove those pesky Steels before sweeping. As for speed, base 72 is a pretty cool place to be at. After Unburden has activated, Adamant Slurpuff will have enough speed to beat even Scarf base 95s such as Jynx and Primeape. Jolly nature sacrifices some power, but it also lets you outspeed even a Jolly Scarf Tauros, which is just about the fastest Scarf user in NU.
