We do plan to do butcher block on the island and the breakfast bar. The large window by the refrigerator makes it difficult to do anything too useful with that back wall, but maybe some open shelving between the window and the mudroom? There won't be a door to slam (knocking things off), just an opening.
The two doorways on the adjoining wall are for the laundry room and pantry. That wall probably has some potential for open shelving, although it's also a thoroughfare, and will likely hold our spice rack.