The big question is whether or not Shift Up will continue to have Sony be the publisher for the PC release, and if they are, whether Sony will require PSN. That will tank the sales. They should self-publish as it will be released on Steam and Epic, maybe see if MS will toss in some cash for a GamePass release too (highly doubtful though).
I am unsure if the PC release will include the Summer / Nier updates, but it should include everything else released such as Photo Mode, all the QoL and all the extra outfits (including the ones non-Nier outfits coming out with the Nier update). I am sure there will be another collab before the PC release for Nikke, and a slim chance at a more robust paid DLC with Story and new maps. All the special DLC's will be added over time to finish out 2025, and that will most likely be the "end" of Stellar Blade until a possible SB2 in 2028+.
There is zero chance that SU would have Eve be able to remove the Skin Suit and be nude, at most they would add a different Skin Suit.