We have four farmhouse style sinks in two different houses, and all present the same problem. It doesn't have anything to do with the material as two sinks are concrete, one stainless steel, and one composite stone. With the two kitchen sinks it's very frustrating spraying out the food particles from corner to corner. Food particles go from one side to the other, and it's very difficult to corral them to the drain. The two concrete bathroom sinks don't have enough slope, so when shaving and brushing teeth, the water and material flow to the opposite side of the sink. It's annoying to wash a 3' wide sink every time it's used. And gross if the sink isn't cleaned from side to side after every use. As a compromise, we're installing a farmhouse concrete bathroom sink with two drains and more slope. As I evaluate many things in life, a, farmhouse sink is a solutions looking for problem.

I am not sure about the idea that your kitchen needs to look like it is in a display home at all times with nothing to indicate that you use it regularly. I love cooking and still manage to put used dishes straight into the dishwasher and keep the benches relatively clear. Any open plan kitchen layout will have the same issue ie you will still see dishes on the sink no matter where you place it in the kitchen. Stay focussed on the function, walking from one side of the kitchen between the sink and cooktop is not efficient nor safe. Next time you are preparing a meal imagine you are doing it in your new kitchen layout as this will test whether it functions properly for you. Definitely keep your larder/pantry you won't regret it. More than 3-4 stools at the island can be over rated, most people prefer to sit around a table as a family rather than line up at the bench looking at the sink and stove. It sounds like you have always been on the right track, just try not to over think it.

first decide how much counter is needed and if you prefer surface mounted or drop in sink...we chose the smallest drop in sink because it allows for generous counter space and because they're so comfortable to use they looks perfect

Yes I agree not to paint or add an faux type treatments as over time they will deteriorate and the bathroom will look tacky. My suggestion would be to hang two large rectangular framed photos. Use a light gold colour for the frame and almost silver looking one but you can just see the gold. Keep the framed photos light and classical, not to busy. On the vanity add a tray the same colour as the photo framed or with a mirrored look. Use white fluffy towels and a Scandinavian style light colour timber towel rack. Possibly a gold colour pot containing a leafy green plant. My