A dark quartz countertop could give you great contrast if you plan on keeping the lower cabinets. Quartz is one of the most durable, can take a hot pot, doesn't scar and requires minimal care. (All other stone types have limitations and require extra work.) Daytime photos would give a better idea of what you have in the way of upper cabinets and light fixtures, how much light you get. Also, need some comment on your decorating style -- modern/cottage/traditional, etc. -- and color preferences. What rooms does this kitchen connect to? In the meantime, look into replacing the cabinet doors. These look somewhat 70s, and you may enjoy a wood or a color. There are a lot of companies that specialize in refacing cabinets. Some glass doors might be interesting. Search houzz for kitchens you like; that will help you focus on what changes you want to make and will help us make suggestions.

That’s a great kitchen, the view is fabulous, I think replacing fridge with s/steel one ( no magnets on door) add s/steel stools , fab white bowls along top of cupboards then take another look, it looks great in photos, if anything replace bench top, quartz as suggested could look great, I think it’s a pretty awesome area , lucky you, I would be so happy if my kitchen had your outlook. But on saying that if you want a complete new kitchen I am sure you will get some great ideas from other Houzzers

lovely!! really like the bold veins!

Cherry Pop - great looking tiles, however your decsion to use them as splashback will depend on their size and the height of the available area to tile. With such a strong pattern you don't want to trim a tile to fit the height. The ideal solution would be to install the window so that the distance between the underside of the window architrave, near the bottom of the window, and the installed benchtop is exactly one tile in height. This will need some careful measurement and juggling of trades to get it perfect. Or you could change your pool tile to be less of a feature such as this simple, white, square, contemporary mosaic. As it is smaller, and has no pattern then it doesn't matter if a row needs to be trimmed to fit in the available wall space. Best of luck, Dr Retro of Dr Retro House Calls