We have found you can put two "garden kneelers" (flat foam cushions about 6" wide, 13" long, 1" think) side by side inside one of those ubiquitous canvas grocery bags (the unstructured kind - wimpy on the bottom). Then hang that around the headrest posts so it makes an extra "seatback". This will let you recline the seat a tiny bit so the headrest is less of an issue, and your back still feels more upright because the back of the seat has been brought forward. We will take them out come cold weather (we made it through last winter without them), but for now they help.
This was the issue we mentioned at the very first test-drive as being hideous, but it is how they do new cars.
Delivered: Nov 8, 2011
Lost first bar: 10/2/2014 at 28,410 miles