The build

I remember the excitement of a new kitchen too - 20 years ago! One thing that you could consider is easier access to the corner cupboard by the fridge. They tend to be inaccessible once you have stuff in there. I have cupboards (like the one in your other corner) that wrap around the corner with two doors that open onto an L shaped cupboard. Even then, the Back corner is the dump corner that is rarely used.
I agree with JJB about sockets. I thought I had plenty but, they're not quite enough!!