1+:
If the shortcut contains neither Ctrl+ nor Alt+ (e.g. Shift+F11), the step changes will be saved.
2+:
If I don’t use the shortcut key,
or I don’t have “Ctrl+” in the shortcut,
“Increase/Decrease Font Size” command leaves the message in the status bar. (Though pressing Ctrl key will clear it.)
5:
The commands don’t move the saved item to top in the menu.
New suggestions:
+ Command: Set Current Font as Default.
+ Command: Reset Font.