Bring up enverything no matter how small. Even if you aren't sure it's a problem. If they don't explain how it's not a problem satisfactorily, complain. If they don't fix it, complain again and be more insistent.
Seriously. Everything that goes wrong once your warranty is over is going to cost you a fortune. Don't pay for any defective parts that break!
Rust anywhere is unacceptable, paint issues are not acceptable. The radio knob breaking is unacceptable. The brakes squeaking in the wrong manner is unacceptable.