My take on the whole Priority/Safe/Cuts thing, by series:
- Only 1st parties, as 3rd parties are too hard to predict.
- If a character leaves, their Echo leaves with them. If the character stays, the Echo stays.
- I'm assuming the game Sakurai is currently working on that started development in April/May 2022 is in fact Smash 6.
Mario: Mario, Luigi, Bowser and Peach (and by extension Daisy) are all safe. Rosalina and Bowser Jr. depend on whether there's enough dev time. I could also see Sakurai prioritizing a newcomer here, like Toad or Waluigi. Doc and Plant are probably the lowest priority, but I could see Doc getting added last minute over a newcomer if Sakurai has enough time since he's an easy clone.
Donkey Kong: Donkey Kong is obviously safe, and I could see K. Rool prioritized over Diddy since he's a ballot pick, but Sakurai will likely try his hardest to bring the all back. A newcomer here (likely Dixie) will be added only if there's enough time, but not prioritized over the three veterans.
Legend of Zelda: Weird one. Link, Zelda and Ganondorf are all safe. Sheik could return based on seniority and Toon Link will likely be prioritized over Young Link. Newcomer though? Every Smash we're on the same boat that "This time they add THAT NPC from the last Zelda for sure." but it never happens. I want to think we'll finally get one for Smash 6 but man, I'm just not sure.
Metroid: Samus is safe and by extension so is Dark Samus. Ridley I can see being prioritized over ZSamus since he's a ballot pick, but I could see all returning. I suppose there's a chance for a newcomer (not familiar with Dread enough to know who to pick), but like with DK, it won't be prioritized over the veterans.
Yoshi: Yoshi is safe and that's it. There isn't much to say about this series.
Star Fox: Fox is safe. Falco will likely be prioritized over Wolf, since Sakurai had no issues cutting him once. I don't see this series getting a newcomer.
Kirby: Sakurai is 100% bringing his three babies back, but I could see no newcomer here so Sakurai could avoid accusations of favoritism (which happened when he added MK and Dedede back in Brawl).
Pokemon: Pikachu is safe. I could also see Squirtle and Ivysaur getting low prioritized and Charizard getting a solo spot once again. For the rest of the characters the prioritized list would be Lucario > Mewtwo > Greninja > Incineroar > Pichu. And since Sakurai himself confirmed Pokemon has a safe newcomer spot on every Smash, this will likely go to a Gen 9 Pokemon (money's on Meowscarada), which will be high priority only after Pikachu.
F-Zero: Cap's safe. Doubt we'll get a newcomer here, although I'll take an Echo like Jody Summer.
Earthbound: Ness' safe. Series has been done since before Brawl came out so anything new here would be a miracle, specially since Lucas was low priority in Smash 4. I suppose Ninten as a Ness Echo could happen, but even that feels like a long shot.
Fire Emblem: Lots to unpack here. Marth and by extension Lucina are safe. Ike and Byleth are likely high priority due to IntSys loving Ike and Byleth being the MC of the highest-selling entry. At this point I could see a newcomer (probably Alear) getting prioritized over Robin, Roy/Chrom and Corrin. Although Chrom is a weird one since he's a ballot pick, so maybe Sakurai will de-clone him and prioritize him higher? Who knows.
Kid Icarus: Pit and by extension Dark Pit are safe. Palutena may be as well. Don't see much happening here as far as newcomers go. I would love Viridi, but like with Kirby, Sakurai may not want to give this series much favoritism.
Warioware: Wario's safe. If we get a newcomer it could be Ashley or maybe Mona, but anyone else is probably wishful thinking.
Pikmin: An interesting one. Olimar is safe, and Oatchi feels like a popular newcomer pick so we could get him. There's also the chance of Alph getting separated into his own slot or adding another character like Louie or Brittany as an Olimar Echo.
Animal Crossing: Villager and Isabelle are likely both safe. If we get a newcomer I could see it being Tom Nook, but zero chance they prioritize him over the two veterans.
Wii Fit: Yeah, Wii Fit Trainer is probably safe due to uniqueness, but there's no other rep they could add from this series.
Punch-Out!: Mac's likely safe. I guess Sakurai could try for a second rep here with someone like Super Macho Man or Mr. Sandman since they could be easy clones, but I doubt it.
Xenoblade: Shulk and Pyra/Mythra are likely all safe, and I expect them prioritized over a newcomer (likely Noah or Mio, maybe Elma if Sakurai was aware of the Switch port).
Splatoon: Inkling is safe, and I could see Octoling added as an Echo or semi-clone. Real question is if the add a more unique newcomer, like the Squid Sisters or Off The Hook.
ARMS: Min Min I say is safe, and adding a newcomer depends on whether a new game in the series is in development. If there's not, I could see Min Min staying as the sole series rep.
And finally, the characters that represent the Retro series with no room for newcomers, I could see them being prioritized in order of seniority, but Sakurai will likely try to bring them all back since they feel like part of the same group.
- Mr. Game & Watch
- Ice Climbers
- R.O.B
- Duck Hunt