Water + electronics/power typically isn’t very durable, or reliable. Most people want their shower valves to work at least 20 years, ideally 50-100.

Can be mitigated to a degree by separating the (cheaper) sensors and the (pricier) logic.

But then it will become a tradeoff of complexity vs longevity.

	▲	lazide a day ago \| parent [-]
		Nah, because it would still need servicing. And why? There are reasonably well done, low maintenance, temperature balancing valves out there. And they do typically last 20+ or more years.