Yeah, I know, but not everyone sang in those areas - lots more did than now, obv. The distance between the corners would, potentially, help to spread the signing further around the ground. If that was done, I'm sure it could be extended a bit at each side, if need be.
Most parts of the ground are sold out most weeks, tbf. The point I wa making is that I don't hear lots of people complaining they can't get tickets beside bf1, and most in bf2 don't stand, anyway.