Dave, I just sent you a PM, but your point on modern fixtures is something I've noted form many years. Sinks with dead flat bottoms, on the inside are very trendy now and have been for some time. I looked at one that was hooked up in a showroom. Water was remaining in the bottom. Sinks should be curved to the drain, so that they drain. I guess bathroom fixture designers have trouble with fluid concepts.

Location: Sunny Seattle

Thank you Erich, I think I've found a company in the north west most appear to be at the other end of the country or are on site which isn't vitreous enamelling.
The amount of modern items which are not fit for purpose or designed without much thought is amazing.