Current offroad is nothing more, than just racing on SUVs. In my opinion, Offroad racing must have not only default race tracks, but more hardcore challenge, such as real offroad parts, where driver can't just go on max speed, but must think and demonstrate offroad driving technique. This is not present in NFS series at all, and that is sad. I wish the game will have offroad component like in UAZ 4x4 series. That will be a LOT harder, than any race in current game, but it will have better reward, just like current time attack race compared to sprint race.
By the way, transfer case for SUVs will be a great thing, but it is not needed without hard conditions like what I described above.