Holy s@++ Fitch is still alive? Dang, way to go, Grandma!

As much as I still have Feelings™ about PF2 Assumptions & Meta bringing down the spirit of Starfinder - it is pretty cool to be able to unlock PF2 options for SFS2! Very interested to see what will be available there, and when! Access to PF2 species, especially ones that are still common in Starfinder times like elf or dwarf, feels like a slam dunk. I'm not sure I have an opinion on "having PF2 classes out of the gate runs a risk of diluting the SF2 classes." I can see the point that's being made, though. Requires further thought.

Also, to be honest, I’m just not sure what to call this new rank. Rings? Comets? Moons? Donuts?

Damnit Speidel, give the people what they want! The children yearn for the Space-Donuts! XD

As far as Achievement Point awards, I miss the expensive vanity purchases from PF1, like being able to buy your own island or ship. It was a lot of fun when you had to travel somewhere by boat to the adventure to say, "Let's take my ship!" I liked the ability to invest my characters further into the world. I'd love to see that kind of thing.

Seconding this. Even the handful of rare Vanity Boons, either official or unofficial, in SF1 were pretty cool. Things that weren't really 'mechanical' benefits but still impacted the narrative and overall story helped me feel like a part of the living world: stuff like Strawberry Machine Cake or Abysshead! albums, Personal Vaults from 1-16, or everyone's favourite pal, the Sharktopus (<3) not only helped the universe feel more lived in, but that it was lived in by us, the players.

I know that Starship Combat is still a ways away, but in SFS1 having special Starship Boons was always cool - you knew you were in for a ride when someone slapped a Gorgon boon sheet down on the table! Some way to bring that back in, even as just a flavourful narrative thing for now, would be cool, but full on custom starship stats when rules for such a thing exist would be awesome! (On that note, it's been three years, but, my offer still stands XD)

Like, picture a Spacey-P boon called "Space-Paint Job." For a modest fee of meta-currency, you can narratively declare the shuttle / Pegasus / Whatever that you're riding to the scenario location has a custom paint scheme, instead of the standard Starfinder Society livery. Cherry red Drake? Pegasus with Purple accents, to be sneakier? The dreaded Oops, All Sparkles Azata? Sure, why not! I don't know to what extent Vehicles will show up in SFS2 scenarios, but same idea there. An exploration buggy is cool, but an exploration buggy with dangly fuzzy d20s is cool.
Granted it feels a bit silly, sure, but, c'mon, it's Starfinder. Silliness in Space is part of the charm!