I also find this omission utterly baffling. It's the only car I've ever had (with lecky windows) that didn't have "One touch" on the drivers window. I actually went back to the garage not long after I got it, and complained that it was broken. I was very surprised to be told it didn't have it. After all, it's meant to be the 2nd highest spec in the range, and as such I think it's unforgivable penny pinching! I'd sooner have had that than the useless sun blinds at the rear windows and the "Privacy Glass" which is fine in the summer, but a nightmare in the (fast approaching) dark winter months!
My old Picasso had it, and on my Xantia, the sensor was so good, you could put an apple between the glass and the frame and it barely bruised the skin!
2008 2.0 TDCi Zetec