I like a couple of the new cars (Formula car and Isle of Man STI), but some of the other selections seem like strange additions. A VW bus? Seriously? No one's going to take that racing. Meanwhile, the game is still missing notable cars like Honda S2000, Lexus LFA, McLaren P1, Porsche 918.
The online-only thing still pisses me off too. They added single player, which is growing with every update, but it won't save progress if you're not connected to the GT network. You can't even access the dealerships if you're not connected to their network. A couple of weeks ago, I was in the middle of an endurance race - I think it was the 30 lap Porsche Cup @ Suzuka. Didn't have time to do it all at once, so I put my PS4 to sleep. Resumed the race a couple days later, finished it.... and found out that an update had come out and so I was no longer connected to the network. Lost my progress. Fuuuuuuuuu