Suppose that in unrated games we will have some optional features.
We can have opening book suggestion, it will suggest the next move according to known openings.
We can have calculation board to try moving piece instead of moving piece in our head.
We can have blunder warning, it will show pieces that are about to captured in different color.
We can also see unguarded piece in different color.
We will able to get suggestion for known end game.
We will be able to draw on known draw games.
Those are just ideas not feature requests.
I love this site.