My WW2 humble parents ....who have had very basic vehicles in their life.... still remember my mom hitting the heated rear seater button a couple years back and just told me heading back over pass "this vehicle is so smooth... I know why you bought it... so smooth... my so sore back likes these rear seats."... she had never sat in heated seats before... she had to turn them down in the back because high was too warm.
In summer.... my brother was dropping his window in the 90+ degree heat while my mom was happy with her window closed and the related meat locker rear temps.
EDIT: After having a "true" 3rd zone..... I will never sacrifice on a future vehicle... granted even 4+ zone is available now on some vehicles but I think you know what I mean. Heater on a 470 is probably easier to add than AC is on a 4R.
EDIT2: IMO.. if you don't plan to have anyone in rear the rear HVAC options are probably a moot purchase point.. .. my elderly mother cemented it for me for my use case. Again.. your mileage and needs will vary.