Jokes aside, Rain Charizard might actually be serviceable in Doubles/VGC where Toxapex is a non-issue, similar to some past rain teams that have used Volcarona. You can even use the Gigantamax to one-shot Ferro in the rain without interfering with the weather. There aren't very many offensive Flying-types to worry about in Galar so I wouldn't surprised if most teams leave themselves weak to double Hurricane spam from Pelipper + Zard.
I'm looking forward to figuring out these new Terrain setters. Male Indeedee has just enough SpA to pull of the Scarf + Unburden Acid Spray Accelgor combo similar to Lele, and even packs Mystical Fire to threaten Ferro, while Female Indeedee can use Psychic Terrain + Follow Me to allow easy setup for its partner that's very difficult to disrupt. Galar Weezing with Misty Surge unfortunately can't really use WoW and doesn't otherwise benefit from status immunity in the same way Fini did, so not sure how best to take advantage of that. Pincurchin is pretty wack, I guess it disrupts the other Terrains and might do something with a TR team? Sleep immunity is very situational now that all the good Spore users are gone.
Also why can't Pincurchin learn Spiky Shield? GF pls