What I've observed is that getting a heat pump turns into a real science fair project for homeowners, and forget trying to integrate air quality in a good way. The proprietary communicating thermostats that come with heat pumps are really bad, and you can force an Ecobee or Nest to work with the heat pumps, but it hurts system efficiency by turning your variable speed equipment into less efficient fixed stage equipment. Lots of integration problems to be solved!