The multiplayer is lacking in features,
im on PC now so this might be different for the xbox users but its such a headache having to minimize the game look at friends lists invite or join someone for a custom game, just let us search anything thats public.
Anyway im coming from gran turismo 5 and 6 and coming from a ps3 game the muliplayer is still miles ahead of forza. For example everyone can test cars on the track before a race or everyone just drags or drifts, people can come as they go, test tunes, change cars, maybe this will change in the future i dont know, but as of right now with out a strong multiplayer im already getting a little tired of forza already.