Obsidian is quickly becoming a GUI with all the plugin functionality. For example, Dataview tables.
Once you have built a Note that you plan on using as a GUI, you might want that Note to stay in Preview Mode, even when everything else is in Edit Mode so you can continue to work on your Notes.
This would eliminate a lot of switching back and forth, for example, to be able to Check off a Task/todo when completed.
Yes, I know there is a easy hotkey solution to flipping back and forth, but this is a more efficient concept. It would be optional.
I think you would have to have a visible switch at the top of each Note. Or perhaps a Frontmatter command word that Obsidian would read when opening a Note. The idea of Frontmatter command words seems very interesting. That would make implementing different Note Hacks very easy for Users to apply at will.