I am the only one who thinks that weather teams are going to be extremely good now?
SUN:
Ninetales - Drought
103/106/105/111/130/130
Groudon - Drought
Stats stay same
Exeggutor - Chlorophyl
125/125/115/155/95/85
Victreebel - Chlorophyl
110/135/95/130/100/100
Each with Growth
Mega Houndoom - Solar Power
95/110/110/160/110/135
Low tier Fire types like Magmortar get epic boosts to their fire STABs.
Ninetales is now a far better sun setter, and the power creep of strong Chlorophyl sweepers is ridiculous. Mega Houndoom is a crazy wall breaker.
HAIL:
Mega Abomasnow - Snow Warning
100/142/115/142/115/40
Aurorus - Snow Warning
153/107/102/129/122/88
Snover - Snow Warning (Eviolite)
90/92/80/92/90/70
Walrein - Ice Body
140/110/120/125/120/95
Regice - Ice Body
110/80/130/130/230/80
Avalugg - Ice Body
125/147/214/74/76/58
Hail stall may actually be a thing again. Mega Abo gets a small boost to all its stats, Aurorus becomes extremely bulky and gains some nice offensive presence, and Snover becomes really bulky with Eviolite and could use Leech Seed. All of the Ice Body users become beyond bulky, honestly those defensive stats are incredible, plus they have great offenses too! Also I believe that Eviolite will be extremely common in this meta with some of the new found defensive threats, and Eviolite > Leftovers means that Hail wears down the opponent far more swiftly.
RAIN:
I may be wrong but isn't Politoad PU cause of Drizzle being banned outside of OU? Assuming this is the case;
Politoad - Drizzle
120/105/105/120/130/100
Kyogre - Drizzle
Stats stay same
List of viable Swift Swimmers:
UU: Kingdra, Swampert,
RU: Omastar, Qwilfish, Seismitoad,
NU and below: Kabutops, Ludicolo, Beartic, Armaldo, Poliwrath, Golduck, Carracosta, Relicanth, Gorebyss, Huntail
Ludicolo - Rain Dish
110/100/100/120/130/100
Tentacruel - Rain Dish
90/80/75/90/130/110
Pelipper - Rain Dish
90/80/130/115/100/95
Goodra - Hydration
100/110/80/120/160/90
Lapras - Hydration
160/115/110/15/125/90
Vaporeon - Hydration
140/75/70/120/105/75
Whiscash - Hydration
140/108/103/106/101/90
Alomomola - Hydration
185/95/100/60/65/85
Phione - Hydration
110/110/110/110/110/110
+ All the many strong users of Hydro Pump, Water Fall and Hurricane that are boosted.
Yeah tbh I think Rain might be pretty scary. Like really scary. Like borderline broken.
SAND:
(Mega) Tyranitar - Sand Stream
Stats stay same
Hippowdon - Sand Stream
Stats stay same
Hippopotas - Sand Stream (Eviolite)
98/102/108/68/72/62
Excadrill - Sand Rush
Stats stay same
Stoutland - Sand Rush
115/140/120/75/120/110
Sandslash - Sand Rush
105/130/140/75/85/95
Mega Garchomp - Sand Force
Stats stay same
Mega Steelix - Sand Force
95/145/250/75/115/50
Gigalith - Sand Force
115/165/160/90/110/55
Rock Types in general: Every rock type NU or below gain +30 SpD and the Sand boost, meaning heaps will be epic AV users and things like Cradily and Aurorus will be unbreakable on the special side.
So sand doesn't much in the form of setters, but Excadrill has some partners now, and Gigalith in particular would be an extremely powerful wall breaker in Sand. Also all Rock type pokemon below OU get a massive buff to SpD.
Weather as a whole:
10/10 would use. Much better. Lots of epic new tools to use for each weather.