This isn't related to this current idea, but it looks like you want all ideas posted in this thread so here goes.
No idea the feasibility of this in Factorio but it would be great if "pinned" mode or a secondary "pinned" mode could lock the notepad to the "static" ui such as the minimap or other modslike todo list or rpg system. Where the notepad is toggle locked to the top left/center/middle etc and it automatically adjusts its positioning when in remote/map view.
Currently, if i pin the notepad to the top of the screen, when i open remote view, it sits on top of the "remote view" border instead of automatically adjusting to inside the remote view border like the minimap and other mod ui's do.
Not a bid deal, but would be a "nice to have" feature.