I think your benchtop material choice really depends on how both you and your husband live and what level of natural wear you are comfortable with showing. Natural wood benchtops to me are very similar to natural stone or stainless steel. The surfaces will naturally age and show use, scratches and imperfections much more than say a caesarstone if it's a high use area but some people love that look and it goes well with an industrial or natural style. My wife and I thought long and hard about it but realised we want the benchtop to look as new and clean each time as possible so opted back for caeserstone (Ocean Foam) which hid small stains and dust :)

My son used to help me cook in the kitchen - he is 190 cm, I am 175cm. I have an old-fashioned breakfast bar which is raised above the level of the kitchen benchtop. My son would stand at the raised section, I would stand at the lower section, it worked really well. An alternative might be to have a pull out step in the kick board spaces for your wife to stand on - I don't know if it would be high enough, but it might make things more comfortable. Speaking from the point of view of a tall woman, I will have my next kitchen cupboards and laundry raised at least 10 cm to make my life more comfortable - bending forward for any length of time is seriously UN comfortable!

I'm not sure what advice you're after but I'll add my two cents worth. I love the kids bathroom. I ditch Hall 3 and enter the house from the garage through an enlarged laundry. You could add a drop zone.

Yes, if you check the Caeserstone website they say; " As Calacatta Nuvo™ incorporates large veins with some small unique natural variation between slabs, we encourage those of you that select this design to view your actual full slabs first hand at the stonemason prior to them commencing fabrication." https://www.caesarstone.com.au/colour/5131-calacatta-nuvo I am not sure if your product is from Caeserstone or a competitor, but most manufacturers have a similar disclaimer with their veined reconstituted stone as there is variation between slabs as you have discovered. If you were selecting from real Calacatta marble from Italy you would definitely check the slabs before delivery as there is always variation in natural material. I suppose the question is - who checked the slabs? Or did you just order for two to be delivered, assuming they would be the same? Best of luck, Dr Retro of Dr Retro House Calls