My list of nits to pick (against dozens of more important standout features - looks, mileage, value, fun to drive, fun forum, etc.)
1) Uneven trunk due to battery (I especially noticed this when transporting a 25" pizza)
2) Sensitive dash buttons make it easy to accidentally press them - ex. inadvertently activating seat warmer while adjusting volume.
3) Inability to adjust MyView with all the fuel information I want - if the 2014 models were updated to also include the Fuel info in the right dash screen then this issue is solved.
4) At times ICE at low speeds sounds less than spectacular
Ford definitely has a winner with the Fusion Hybrid and I'd like to see them keep pushing the technology envelope - such as able to configure Internet access through smartphone, allow set up of common online music apps, and allow voice activation commands to work within those apps.