Pinned for the idea. Not sure how much I like the extension over the toilet. If were to do, vanity top should be one piece, with no cut line. Also: Consider how much the extra counter space would be needed.
The World's Most Beautiful Bathroom Sinks. Above: this sink by Italian maker Altamarea is part of a collection called 'Must', as in 'must have'. It also comes in an onyx version, which appears to glow from within.