I leased my Jetta because VW offered a too good to pass offer. I got an S model with roof and wheels. It is a great looking car and I get a lot of compliments on it. It is a lot of fun to drive. I have the 5 spd. and the performance is great. I am a former SCCA road racer and this car handles and drives great. The features this car has at this price point is unbelieveable. It is one of the best cars I have ever owned and there is nothing about it I don't like. Porsche obviously has fixed the problems that VW was known for, and this car is a huge value for the money. I have driven many more expensive cars, but few have more features than this VW. A great buy for the money.
I would have no improvements to offer. The radio is killer, the seats comfortable and handling great. VW has hit a home run with this car, and has left the problems behind them.