Yes, plus the following suggestions:So, my question is: does anyone think this would be a feature you'd like to have?
1) It seems more elegant to do this as a horizontal strip at the top of the screen. This would allow you to put Navigation arrows < and > on the left and right to move within the scene list for a day. You'd also have the option to include << and >> arrows to move to the Previous or Next day.
2) Hovering is not mobile friendly, and can be also problematic for people who use windowed instead of fullscreen as mouseover events persist through all Z planes in some situations, and just sometimes buggy in general. I would suggest a toggle, either as an icon/text label added to the existing controls at the bottom of the screen which are already persistent that pops the menu out or retracts it. If you can't modify the default Renpy controls, your new control could be located to the left or right of them.
3) You have such a good focus on keyboard controls, so I would encourage a keybind to popup the scene selector with numbering 1-7 to jump to that scene and maybe 0/8 for back and next scene page.
4) Not entirely related but on the subject of indicators, more than just "does this scene contain a choice" I actually wish you exposed which scenes had has persistent options. Like, anything that touches a variable on the DoOver menu. It would be very useful for dialog testing on later scenes. Off the top of my head, I have no idea which day some of the events on the DoOver screen actually happen, so either adding clickable jumps from DoOver to that specific day/scene or indicators on the day/scene list would be helpful in testing alternate dialog events.
That's all my first impressions, looks like an excellent improvement.