Nothing to date.
The Cougar is a lovely all around car. Great drive, very comfortable and great top speed. It's a pity about the seats in the back, but ones in the front are very nice.
Your view of the Cougar is spot on mate. A little room in the back is fine, as I sit in the front most of the time!
As for people who think the cougar is sloppy on twisty roads; well they might just not be drivers in the true sense, and should remember the car is big and heavy as far as sports cars go.
I have owned my Cougar for 6 months now, and I'm over the moon with how it drives and looks; it always makes me smile.