Had a go yesterday on the new transform races. First one I did was of course get wrecked and so far I have to say, the new stunt races are really good. I like how in plane sections you have to adjust the angle or rotation or whatever on your plane to go through certain checkpoints which add a bit of challenge to it and if you fail to do that, your plane slows down.
While Rockstar may have hired the right person to do the props for the races, there's one big flaw that kills Rockstar's transform races. The fact that they still haven't learned their lesson from the bad checkpoint placement that they had since Cunning Stunts. On get wrecked, the first checkpoint on the top section of the ship can easily be missed if you went too fast on the jump before it.