New Physics (Pro Mode) -> Maybe more realistic, but no more fun
In most of the vids you can see the drivers going off the track because the car is heavily understeering - mostly they end up last after one single lap.
Ok they will have to get used to the new physics,
but:
In computergames you have to estimate your cornering speed visually, because every computergame lacks of the presence of G-forces which in real life gives you an indication for the speed.
And if that visual impression doesnt match the actually max cornering speed given by the physics of the game the driver tends to going too fast around the corner.
I find this in many PC Racing-Games (i.e. GTR, GTR2 etc.) and found that for me it doesnt make fun to play them anymore so i quit.