Smells real real fishy that they would replace the MAF sensor without the owner stating the check engine light is on, and doing transmission work without a complaint in the operation ie rough shift or a slip, etc. Raer rotors at 42000 would concern me too.
The ball joints at 42000 may be normal if the car is driven on real poor roads ALL the time, but other than that it's hard to believe, but possible.
Has the dealer ever flushed the brake fluid or coolant? Should have both been done by now, the brake fluid probably twice actually. It's nice to have a dealer give it a good going over before
the warranty runs out, but this is really odd.