Thank you for reviewing all of this :)
I’ll add points #1, #2, #3, #5, #6, #8, and #10 to my development list.
As for points #4 and #7, I think auto-save (and Ctrl + S) and the Ctrl + N shortcuts are fine for now.
I specifically wanted the editor to behave this way (#9); being able to position each line of the note anywhere on the screen makes it easier for me to read, since it lets me see the last part of the note at the top of the screen.
#11 I intended to develop one, but there’s still a long way to go; let’s see how this project evolves!