OK, this are my likes and dislikes:

Glass-fronted top cupboards for glasswear.
Corner display units - I have two, one for vases and the biscuit jar, the other for tea and coffee pots.
Sink with workspace next to it and the drainer next to a tall cupboard (for the boiler): can stack dirty dishes in that space, and no wasted space next to the draining board.
Window in front of the sink! When we moved in you were staring at cupboards at head-hitting height.
As many sockets as possible. You can NEVER have enough sockets!
I love a pantry: we lost ours when we renovated and it's a nicer kitchen but I do love a pantry.
I also love cupboards with little baskets on rollers that come out, like drawers inside a cupboard.
One thing I hate about my mother's kitchen is that you have about 2" of worktop then clutter - be it the hob, sink, kettle, microwave, fruit bowl... everything stationary (eg hob, sink) is plonked in the middle of the worktop with space either side. Enough space to put something there, but not enough space to use to cook IYKWIM.
Wine rack. Everyone needs a wine rack. And a shelf for their cookery books.
I love that the worktops are higher than normal - I'm quite tall (about 6') so it helps my back not bending over to chop food up.