Acoustics is a bullshit excuse,if you can get 10,000 16-25 year old young uns together they will create the atmos,
The old SJP before any of the stands were built was fantastic for support mainly because a lot went on the spur of the moment and paid at the turnstyle,
virtually the only ST holders were in the old Milburn stand.It's the 40/50/60/70 year olds who won't sing or create the atmosphere.