Currently, loading the quicksave when launching the game is a somewhat tedious process. You have to navigate to the "Load Game" menu and then move down if you want to select the quicksave.
Moreover, when using the keyboard, the slightest mouse movement (if you keep your hand on it) breaks the focus, and sometimes you can't even regain keyboard focus at all. This makes the whole process even more cumbersome.
So this would be a QOL improvement to allow players to simply press their quickload keybind at the opening of the game and immediately return to the point where they last left off (which is often the quicksave).