But will it be comfortable to use the DW ( loading ,unloading) having to take another step to the left? I did a dry run my reach to the lower rack is approx. 10 in. Into the Dw. This is just swiveling and leaning down for lower rack. But if you place your feet further apart, you can just transfer weight back and forth.
I would suggest a dry run - or mock up to see if it would work for you.

I would prefer more efficient LOADing of dishes, so I'd want the dishwasher right next to the sink. I would not want to drip water across that 15-inch expanse between the sink and the dishwasher.

In my preliminary design there is a skinny cabinet between my sink and dishwasher and I have been thinking there is something wrong with that. It just seems like it would be just fine having no cabinet there. Then I can add that 15 inches to the end of the cabinet run where it would be more useful. Thanks for bringing this up.

My DW is on one leg of a U, with the sink at the closed end. There is a trash pullout between the DW and the corner (which is an angled cabinet), so it's over 2 feet from the DW to the sink. It's not a problem at all. We don't pre-wash our dishes, so most go directly from the table to the DW. Sometimes we do rinse a dish or scrape into the GD at the sink, but I haven't found the dripping issue that jellytoast mentioned to be a big problem - my kitchen floor is tile, so a few drops of water won't harm it.

I realize it's an unpopular configuration on GW, but it works really well for us, especially for unloading dishes. I couldn't have put the DW next to the sink without giving up a lot of efficient and valuable storage space.

Would that 15" cab be for trash? I have a 15" pull out trash cab b/w the sink and DW, and since my DW is a raised one, I can easily use the DW even when the trash is open. But with a normal DW it may not work so well.