Hello there,
More scenes will be added to the love route and other outfits will have special scenes. In regards to the other suggestions:
Anna and Mc already have scenes before Josef leaves. The studio will remain as a morning wake up activity and at most, 1 more character will be able to join in after a dedicated quest.
Anna does have scenes at both the beach (with adrian) and Thursday with Josef, although scenes are in thoughts for when Josef leaves since theres no movie night scene without Josef.
The Kimuras are in thoughts to get some more content, as well as Alice and Norah will have more content with the continuation of Alice's quest in 1.9.
You can already have scenes with Kat and Emma as well as them together. As well as you are able to have daily scene with Nina, the nurse, although she might receive more content. The only starmaker girls with content are Chloe and Celeste since the others are raffle winners design requests.
Astrid and Noire might receive more content.
There will NEVER be a stealing route for Haniya.
The are no plans to release a mobile version and is very unlikely it will happen. It won't be even considered until after steam release, you can use winlator/gamehub to emulate it if really want it on phone.