I think I should be able to expand the playback speed setting like that. I'll look into it and edit my reply as to whether or not I can do it.
If you have discord feel free to add me 'vampirechicken' is my username on discord. We can talk about your suggestion and you can suggest more things if you want.
Edit 1: I haven't looked into this yet but I figured I'd reply to seek clarification did you mean click a keybind to increment and decrement the playback speed.
