As someone who's been playing Forza online since Forza 2, and trading parts on Forza 1, this is the worst multiplayer I have ever seen. I am immensely disappointed with the set-up, The Hoppers, the network connectivity, the lobby progression, about the only good thing is the the idea of being able to pick a track right after the race ends.
I usually spend about 10% of my time in the single-player and the rest in multiplayer, I've completely exhausted the single player and the multiplayer holds no joy. This might be the least amount of time I've ever spent with a Forza game unless they change something.
Pretty much impossible to disagree.