The game needs to give you the choice though, not force you to start with the slow cars and easy races if you don't want to. For those who GTS is their first GT game then sure, they'll probably want to start at the bottom but the choice should be there for the veteran players. No matter how amazingly good the career mode is in GTS, I will still get no excitement doing 6 car beginner races with slow cars. I personally want to jump straight in with something quite nippy against a full field of 16/24 cars and have a race against competent, fast AI.
To progress through the GT6 career you are forced to complete events like:
"A race event aimed at novice drivers who've just bought their first car. Test your skills in this entry-level challenge."
Whether you are indeed a novice or a veteran, you have to do it. GT needs to start offering that choice, and GTS seems like our best shot at that.