I agree, not having the floor setting is a bummer. I close the upper vents & only get the heat to the floor too. It seems they could have done away with one of the other settings to get a floor only.
I use the heated seats everytime I get into the car. It just feels good. In Southern California it's supposed to be mid to upper 70's today, I will still turn them on to soothe the muscles. Every car I will buy will have them.