That non-goal by Lampard wouldn't have changed the outcome of the game anyway. The German's completely outclassed them Blokes today.....
If you watch the replay, the ref was about 20 yards back from the net and almost perfect alignment with Neuer and the ball was right behind Neuer. When Neuer jumped and fell back down, he hit the ground at almost the exact same time the ball bounced in the net. I don't think the ref could judge the depth properly with Neuer in the way, and decided to rule no goal. He must not have been 100% sure that it was in the net. It's a good decision and I feel he made the right call....It's too difficult to tell during live play. When I was watching in real time, I didn't think it was a goal because of the camera angle. Watching the replays, its blatantly obvious..
As far as adding goal judges behind the net at each end of the field, I don't feel its necessary. The game has been played like this for so long, and I enjoy the controversy that sometimes occurs after games. It makes things interesting.....I say keep it the way it is, but I'm sure FIFA will adopt a policy for the next world cup...