I haven't built this plan. The kitchen island looks narrow and in the way though. Maybe it should be more of an L-shaped kitchen without the island. I like sinks in front of windows with a view to the yard so that's nice. The utility room is large but the breakfast room is small and closed in. Depending on how you live in the house that side could be changed some.

I agree with you. The kitchen is a bit odd. I personally don't like narrow islands with ranges in the middle. Do you really need two entrances into the great room? Maybe closing off the entrance closest to the sink, eliminate the peninsula between the kitchen and the nook. That would give you a really nice L with room for a big island. If you want more openness to the great room, perhaps a bigger arched opening above the counter? Be sure to check on the kitchen forum, lots of great designers over there. Also read the attached link for helpful guidelines.

Couple other things that would bother me. I think the stairs ending in a corner is a problem. A real bottle neck especially for getting furniture up and down. Check the dimensions on your master closet which seems really tight to me. I doubt you'll be able to have rods on all 3 walls. It would be nice to have an outside entrance near the mudroom, instead of always having to go through the garage. The plan without basement has a really, really small mud room/laundry. And check the depth of your porches. Depending on the amount of seating you want, they might be shallow.

Here is a link that might be useful: Great info on kitchen layout