Even if it has a standard sunroof, make sure there's no wind noise there either. I have to keep my shade closed because the noise drives me crazy!!
There's things to look out for certainly, but how many will show up in a test drive is another story.
You will see a ton of steering lockup issues here, hopefully that problem is fixed now on newer models, but it was really bad at first. You will also notice a common thread with people having pop's at low speed from their steering columns. It's nothing to worry about usually, just can be annoying.
However, what I wanted to say, since I saw that you had mentioned car seats, was to make sure you look at the rear seats. While the seat room seems to be about the same as my Grand Am GT was, the seats flair out a bit on the two ends. Thus, I was disappointed when I tried to fit in some car seats so that it would buckle right. The seat, especially once it's just a booster seat, ends up at an angle slightly. Anyway, just make sure that your seats will fit ok!