I don't like wasted space so before the island gets its counter top, here are the not-very-convenient cupboards that will be mostly hidden by the overhang on the sitting side. Should work for that pack-rat stuff I don't want to throw away but don't use often. Of course, the high cupboards will be used for some of that, too.
Another idea would have been to make the island even bigger and forgo the seating for more drawers, but the dining table is usually covered with sewing stuff.