My only beef is with the difficulty on some of the bonus challenges in career mode...otherwise great game
Could use improvement: load time, getting in the room with a friend (can't seem to hook up with my boys for some reason), bonus challenge difficulty, variability of car controls.
Maybe the only thing about Mario Kart that is better - they offer much more variability in the way the differnt karts drive...Modnation lets you tweak the controls, but not nearly enough feel like your up against a different car. Although you change the look and feel of your vehicle, you cannot alter the controls enough to make it handle too much different than the other drivers. At the end of the day, a few minor changes and this would be hands down the best kart racing game ever made. I would recommend it to any fans of the kart racing genre.