I've said it a million times and will say it again.
There are about 800 active singers on one side of the away fans and about 1500-2000 on the other.
If they operated as one the rest of the ground would join in more.
The chance to do was when the new SS upper tier opened but they blew it. the noise would have been double from there because it is under a roof.
Possibly but I'm in the south stand lower and I can't see or hear anything that's going on above me. That's why we need one end like they have at Spurs. Three sections won't work