Yes when I went on the ground tour, just looking at the stadia with empty seating looked so wrong - the whole reason I seldom went in to sit in the stands ( Grandstands) was everybody stood up as an blues attack occurred. There was a bit of atmosphere sat down was the thumping of the fans feet on the wooden floors in the old stands, I agree the bygone days of getting to the ground well early was to create an atmosphere to ousting the away fans etc, and you could pay on the gate, you could decide at any time yes let's go today, and also more important no restrictions on most away games of just turning up at an away ground, and paying on the day at the same price as the home fans, and choosing to go in any end, obviously the away end was your target - my favourite away ground was Wolves standing with a huge massive following of Blues fans in their Spion Kop which their fans seemed to use the opposite end!
Happy days, but sadly over!