Is that those Rev-A-Shelf corner slides, or something else? I have seen a couple trick corner cabinet hardware setups, but they are all a compromise. We had a lazy susan in our last house corner, which was Ok, but god help you if something fell off back in there and jammed it up... The best I could do was make the 2 corners 45 degree here, so less of an issue. I also have scads of cabinets, frankly, so I wasn't too worried about the space loss in those corners. The island is more of a "no wasted space design" as I made cabinets on the back side in a couple spots to use space that was other wise blocked to the inside.