I find the lack of a directional graphic for the front parking sensors to be a little irritating. When you put the car in reverse, the camera will show green/yellow/red squares indicating the direction the obstruction is in if the rear sensors also go off. However, with the front sensors, you have to look carefully to determine what caused the beeping.
By directional graphic I mean something like this:
Given how high tech the rest of the car is, I'm actually surprised Ford didn't include a feature like this.
However, most cars in the Fusion's class don't offer parking sensors at all, so I'm lucky to have them on both the front and the rear for under $30k!
Another thing I find irritating is that if you want a factory garage door opener you must buy the moonroof. I got my car pre-owned so I didn't exactly get to choose, but if I had bought it new, I would've ignored that option and just spliced a remote into the visor myself (or done a visor swap with a scrap car). I personally detest moonroofs - they add extra weight (which affects fuel economy), they're a vulnerable point on the roof for wear and tear (not to mention cracking), they present an opportunity for leaking, and (at least in my family) they will go untouched for as long as you own the vehicle! Honestly, f*** mandatory moonroofs. A lot of high end luxury cars even have them standard, something my dad hates on his Lexus LS. In my opinion they're the most useless feature in a car. Others probably will have different sentiments though - I know one guy who does open his moonroof on a hot day, but I wouldn't do that out of paranoia of bird droppings haha.
My family doesn't like moonroofs either, and ironically all our cars since 2001 (Acura TL, Acura MDX, Honda Odyssey, Lexus LS430, Lexus LS460, both Fusions I've owned) have included one. We literally have traded in cars without ever checking once whether the moonroof worked or not. On my old car, the moonroof was the source of creaking that I couldn't do anything about (not without paying a mechanic to fix a useless feature).
I had moon roofs on my past two cars. Most of my height, 6'3", is above my waist, so if I needed a haircut, my hair would brush up against the headliner. I got my 2014 MKZ-h without a moon roof as there was even less head room than the previous two MKS's. I would be miserable with my head actually rubbing up against the headliner.
And out here in southern Nevada, it is generally too hot in the summer to let any air in. About the only time I opened it is if we were taking out of town friends down the Vegas strip. It was also nice when driving through the canyon areas of Arizona.
The areas above the windows cut off a lot of the view as well, so they aren't as useful as a convertible.