We've just started ours. It'll be a outdoor kitchen/living area and will be 20' x 33'. Corner rumford woodburning fireplace with wood storage to one side. The kitchen counter will have a built-in propane 34" grill, side burner, sink and bar seating for 4. We're running a propane line to the grill and to the fireplace for a Firestarter.
Any changes you would make to yours? We originally planned a drop-in cooler or refrigerator, but everyone talked us out of it. They said the drop-in just wastes counterspace and the outdoor refrigerators don't seem to last. Plus with our Texas heat, they don't get very cold. We'll just put a Yeti cooler in an unused corner or make a rolling cart for it. I have a ceramic grill that's on a cart too and chose not to have it built in either. We're still working out the lighting, but plan to have accent lights and big fan's.
We'll also have an 8' soaking tub off to the side of the patio (redneck tub made from a galvanized water trough).