1. I agree!
2. Well let me try to put this visually since I'm not good in explaining in words:
(very bad visual, sorry haha but) do you get what I am trying to explain here?
Basically it's to have the information goes from the top (button) to bottom (background), visually.
Though I know that Ren'Py itself does the same thing from bottom to top...
If by any chance this is because of whatever I fail to understand from your explanation, then let me know please. I'll learn more!
Please be patient with me. ´~` )9;;;
3 and 4. That's really cool!! Nice!!