I was just thinking it'd be nice to have a 'remove makeup' command that allows you to wipe away makeup from a particular location, e.g. wipe makeup from lips
Even though a shower usually fixes the problem, if you've got your mascara, eyeliner and eyeshadow perfect but want to change your lipstick colour, you have to start all over again and it's a waste of makeup.
Not a big need and definitely not a gamebreaker, just a nice touch :)