Can you make a "face" that restores, say, the ears to their preferred state?  When you make a face, I believe you have the option to include whatever morph dials you want.  You could make a face that only includes the morphs that change the ears back to their preferred state.  That way you could add facial morphs or adjustments to your heart's content and then apply the "Restore Ears" face you made that will only change the ears.

I do it for poses too.  All my characters have a "back to normal" pose that restores all their settings.  I put the date in the name too so I know which one is the most current.