Some things collected from Twitter:
- don't mute audio or pause gameplay when game window loses focus (for example streamer alt tabs to streamer settings)
- keep one of the bottom corners open for the camera overlay. i was going to allow this by having an option to put a black vertical bar on one or other side of the window
- allow windowed mode, don't require fullscreen.
- allow separate volume levels for sfx/music/voice
- allow subtitles in large font
- don't use tiny fonts, allow UI scaling if possible