I would suggest your plumber links the hot and cold fill pipes to the supply UNDER the sink - this gets rid of unsightly pipes and while he's there get him to move the taps to the L side of sink. I would then create a broad drop down counter top to create a place to sort your laundry ready for hanging out to dry or to fold ready for ironing This drop down counter top to be hinged to R side of washing machine and ensuring the taps are not impeded. If you can't do the drop down version then create a free standing top made out of a piece of MDF/laminated board to put over the sink and washing machine for clothes sorting & folding. This free standing top can 'live' at the side of the washing machine when not needed. I would then put shelves above the folded back counter top to store washing powder and sundries. I would store the washing powder etc in colourful or white boxes to keep the place looking tidy and uniform. Handles on the boxes for ease of access. Oh I do love organising - can I pop round and do this for you? Hope all goes well with the changes.

I would use a bookcase unit with closed doors on the lower half and not too high. Wide and low maybe. Closed lower cabinets are great for toys, games and will not clutter. Open shelves tend to get cluttered after a while. When displaying books, use in stacks standing and lying down. Open space between groupings, not all lined up in rows. Add some decor items sprinkled among the books to give the eye a visual break. I would choose a horizontal art piece for the chair wall. Add some art on the long TV wall leaving a lot of bare wall between the TV . and the artwork between the corners of the chair wall and the window wall.

congrats! first, sand prime and paint out those cabinets....i'd go with a grayish shade of white or pale gray that will work with the flooring. i'd also carefuly chip off the yellow tiles. since on a budget, consider applying some beadboard as your backsplash, painted in a glossy, oil based or marine paint in a crisp white to keep it scrubbable, then, dress up the edges with some small mouldings, painted in the same white paint. this is going to be SO MUCH less costly than tile! and it will look great with the butcher block countertop. you can probably refresh the butcher block with a light sand and oiling. you could even get an additional piece of butcher block (ikea) and create a step-up 'bar' for some stools on the peninsula for some casual seating. then get a pair of pendant lights to hang from the pot lights above (they make lights that insert directly into the pot light...no hardwire necessary).

You DO have a steep slope to deal with! The tree roots will help stabilize the soil and make a mudslide less likely. If you cannot mow the lawn safely, terrace the area (think Machu Pichu) into garden beds for flowers or vegetables. Do you want your children to play on a grassy area or on a man-made surface? Be sure that the play area has shade during the hottest part of the day. Best wishes.