i too have the chatter in the transmission. they did a flash and that didn't help (there is a flash update for the auto stick). then they say they can't find the problem or replicate the problem. then i finally get a tech to ride with me and as soon as we leave the lot it shift from 1-4 before i get to 30 mph and shakes the crap out of the whole car. then they replaced the torque converter. much better but can still feel something wrong. i almost guarantee it's the torque converter.
better shift patterns for automatic mode. better a/c compressor, better insulated dash and doors for premium sound systems, relocate the hazard light button, better aerodynamics (wind is louder than in my ram with the sunroofs open). it need any kind of performance mod!