I think it would be nice to be able to adjust the sound of the game (and of the starting menu too), because I often play while watching something on the side and it's just really loud. Like, I don't know if there is already one (didn't find it if that's the case) but it would be really nice to be able to lower the volume and not just mute it.

If you're playing on Windows, here's a way to adjust sound for the game:

1. Open the game and hit the Windows key (2 to the right of Space)
2. Click on the sound icon on the taskbar (left of the time & date in default) and click on the settings (gear) icon
3. Click on Volume Mixer and scroll down until you find the Starmaker app

But yeah, having a way to do this in game would be a lot better.