I wouldn't want to do without climate control, it has been acting up in my pick up this summer, and it was Damn uncomfortable in High 90's and low triple digit temps.
Being a truck driver I use them more, but I consider Power windows and mirrors a SAFETY feature, all too often in the dark, you get a glare or reflection on the windows, especially when backing, and being able to roll the window down is an easy fix, having to lean across the cab to manually roll a window down, discourages a driver from doing it, again being able to adjust the mirrors as needed can help avoid an accident. The cost of power windows and mirrors(heated mirrors too) is a small price compared to their benefit, in My Opinion.
Bluetooth, heated seats and what not, I can do without, Back up cameras could also be a safety item, but lower on my list.
Doug