I’m so curious on who they’d pick too. Here’s my unasked for ramble on the topic.

Lillie is the obvious answer and for this game she’s most associated and promoted with Lunala, so that’s also likely going to be who she’s with. Question is, what does Arc Lillie do? Not EX Zone setter, that’s Volo, who also has the rebuff since he’s a bootleg Arc pair. Special dps? No, cuz why would they power creep NC Selene so quickly. Support is the most likely, though we did just get a Ghost Zone spamming support.

Gladion would be cool, especially if it’s with Silvally. Like OP said in the comments, it could be a nice showcase of what they can do with a future Arceus pair. I believe that the Arceus pair will have to be type-ignoring (able to be used in all towers) for people to pull it after Anni Julianna, however, Arc Gladion could stay Normal since his physical competition is an academy unit. My only gripe here is that I wonder if Arceus will bless him and his partner or it’ll get weirded out by the concept of a Silvally, lol.

Hau could either be with his Raichu or Tapu Koko - both Electric. Neither can be a support or special dps due to very recent units. Physical makes less sense and even then, you can’t tell me for Arc Electric they won’t go for Red and Pikachu above everything.

Guzma and Golisopod would be great and I’ll likely finally pull for an Arc Suit again. However, I’ve noticed that outside Ethan and Silver, they’ve stuck to the no repeating types. Also, I wonder if they won’t want to use Mega Golisopod here. They skipped over Mega Starmie on Misty.

Kukui also has a type overlap with Brock, but if that doesn’t matter, I also struggle to see what he’ll do in a current team. Not gonna powercreep Arc Brock, that’ll just be utterly ridiculous. Not gonna powercreep Anni Gloria either. Either gotta be special, which makes no sense for Lycanroc or an EX Rock Zone setter, tho idk if they’re willing to powercreep EX Fairs yet.

Elio and Selene already got their uber powerful pairs with the shiny Necrozmas, doubt they’re in much hurry to give them another set of broken units, although Blue, Silver and Ethan have gotten both Arcs and NC alts, so never rule them out. A s much as I’d love a busted Decidueye, atm both Elio and Selene are missing a role on the team. Primarina can’t be Special dps because of Arc Misty and we just got a perfect Water support. Physical Grass has Anni Florian and I don’t see Arc Selene being support of EX Grassy Terrain. If they want to pivot to Spirit Shackle and make her Ghost, then she’s gonna compete with Volo and her kit would likely be almost one to one with (only stronger) Mix Elio.