It's already possible to select only the ear-morphs (or other morphs) Go to a map in the expression-library, click "add to library", click "select subset", select "universe" which will deselect everything, go down to the head-morphs and select all the ear-morphs. I know it's a bit of work,but the expression library is not only for saving expressions, but you can also save face-morphs, or partial face morphs.
If you only zero the morphs and you export those as well, it will zero your morphs again, when you import them. Just export the moprhs you have set and no other morphs, zeroed or not.

my €0.02

best regards,

Bopper.

-How can you improve things when you don't make mistakes?