I really love the new tracks, was a bit boring with all the tracks being in a warehouse in the previous title. Now everything looks great and there's some good variety!
The multiplayer is a nice addition too, even tho it seems to have a bit of issues sometimes... finding other players and connecting to a game can take AGES sometimes.
I'm not as good anymore as i used to be, or there are simply more people playing this time around. I remember how i easily placed in the top 100 of the leaderboards, now it's more like top 10'000 and on a good day top 1'000.
Extreme tracks are bloody hard, but i at least made it through them all... now to get the gold medals for them... whole other story!!