An interesting topic. Bliss Bay definitely has the vibe of the GTA VI trailers. Dowon and Cahaya are less appealing to me, especially Dowon. Dowon’s career could be expanded around the idol career, which she already has. Although I admit I haven’t tested it yet. So I don’t know what limitations it has.
But I would definitely split the music and acting into separate DLCs to have different mechanics, which would give us more gameplay options. Without repetitiveness.
The only thing I’m wondering is whether to release it after EA, as paid DLC, or as part of EA. I would see EA as at least part of it.