I'm actually excited for the Stars arc to be adapted. When you cut out the Nehellenia arc from the '90s anime, Sailor Stars is not that good, honestly. Like, yeah, the Inners and Outers get a bad deal being killed off unceremoniously, but the last season of the '90s anime didn't do any of them justice either (the Inners and Outers played second fiddle to the Sailor Starlights for like the entire season).
So much was cut out too, more than the other seasons combined. No Sailor Lethe, Sailor Mnemosyne, Sailor Chi, Sailor Phi, Sailor Cosmos, Sailor Kakyuu, Guardian Cosmos or the Galaxy Cauldron. Chibi Chibi being Sailor Galaxia's star seed was ridiculous (how the heck is she able to survive at the end without her star seed??) and nowhere near as impactful as Cosmos' backstory. Yeah there's a lot of unexplained things in the manga, but the Stars anime is just as vague about a lot of the plot surrounding the Sailor Wars.
Plus, the ending for the Sailor Stars anime felt kinda weak to me. Like even with something as simple as the senshi reuniting after their deaths. In the manga, we see everyone hugging each other and crying... In the anime, they all just awkwardly float around naked!Usagi, and the only one she hugs is Mamoru. The former doesn't have the same emotional impact to me.
I'm not going to even go into how much Manga!Seiya feels less like a creep than their anime counterpart.