Things that are the wrong height, yes. Not just shelves, but having to reach up to a built in microwave.
Fancy pull out shelves attached to the doors of corner cupboards - too easily broken. Normal shelves are fine.
Not one I've experienced myself, but high maintenance worktops. There was a thread the other day about quartz being a pain to clean.
Overly hi-tech appliances which are harder to operate than cheaper standard equivalents.
Built in tables or breakfast bars - I dislike these where there is enough space for a standalone table.
Storage hooks and racks above or just beside a hob - look lovely and rustic, but the items get greasy, and unless you or your cleaner has time to polish it all off regularly, they're a pain. I'm not a fan of open storage for anything but the most regularly used items because they can attract dust and grime.
Plenty of space on both sides of a sink
Bins in cupboards in smaller kitchens. Better to use the space for storage.
Kickboards that are secure but not completely impossible to remove for cleaning. Like the idea of having none as well.
Freestanding appliances with a few inches of space either side are easier to replace than built-in ones that are an exact and unusual size.
Light fittings that take expensively large quantities of bulbs.
Fridges that are too big for the household's needs - too easy to get into the habit of buying food that won't be eaten before it goes off
The amount of fuel used by Aga style ranges is shocking.
Positive: lights under cupboards / above worktops, which can be switched on and off individually or in pairs at most. It can be a really nice cosy atmosphere using these in the evening rather than the main lights.
If you have high ceilings, the Scottish style washing pulleys.
Space for a comfy seat or two so people can relax whilst things cook, but still keep an eye on them.