General feedback so far on a "Starmaker Story 2" is there will not be one or at least one is not currently planned. If anything it will not be a continuation of Anna's story but a spin off based in the same universe as Starmaker Story.
If you are looking for games in a more realistic setting, might I suggest viewing the "No links needed — this is the best way to get version 1.7" post in the Community section, there are some good recommendations for similar games here.
With 3 more content patches left until Gold, there is a chance of more animations but as Dr.Muramasa has mentioned this is not their main project, and animations to the level of polish we expect in Starmaker are time consuming (even with AI generated content) so do not expect much.
Personally I would love for Starmaker to be their main focus, but it is not 😢