Better weight transfer sounds sweet, did they really have had to overhaul whole physics engine for that ?
In Dirt rally quality of cars physics feels inconsistent, some are quite awesome, believable - for example groupB Peugeot. And I just can't believe in simulation of some, one of them would be McRae Focus. I wonder if they will improve some cars too. Or physics overhaul will fix the issues. McRae focus is just too planted.
Will cars in Dirt4 slide more than it used in Dirt Rally ? I don't know if I'm right, but most of the cars felt like they are quite easy towards the limit. And it also made them harder to drive, because you expect to get some more slide angle, but it straightens already.