I think it is because if the tap handle doesn’t overhang the sink then wet hands drip water over the bench behind the sink. I have an undermount sink with same issue due to required setback from sink and we are learning to shake hands before turning off tap. Pro for wall mount no gunk around base of tap Negative according to my husband who refused to have wall mounted is the tap connections are in wall so if you get any leaks it’s hard to fix. But this goes same for shower I guess. We did have a faulty basin tap that leaked inside the handle area and down into cabinet so had to get replaced so I didn’t-push for wall mounted again.

if you can find a suitable wall tap that is the correct length to have the water fall nicely into the basin then one advantage is that the wall tap takes up less space on the counter and there's less pipes work inside the vanity but...first check out the taps and see which one you can't live without.... as long as the tap does the job you will get used to whichever you choose...one of our vanities had to have wall taps for various reasons and we had to choose a spout from one design and a mixer handle from another...looks good and works fine

Most country homes have water tanks with electric pumps to push the water into the home. They are “on” all the time, but only pump when the tap/shower/dishwasher etc is turned on, to keep the pressure in the system. Talk to a local plumber, they should be able to find a pump suitable for your tank and the water pressure you need.

I love this look,it's exactly what I want for my kitchen update... my husband installed quarter turn taps onto the outdoor taps and I love them, they look great and I want to install them in the kitchen. I think the whole point of this type of look is its straight forward and simple. So it's a lot of copper piping and basic tapware. You may find it easier to buy ready made, but firstly go and look in the plumbing section of your hardware and just see what bits and bobs are there.