Just for historical reference, using post-1983 as a guideline, here was the avg. attendance:
OB capacity 75,500 (1984-1990)
-Marquee Games (e.g: rivalries, top 25 opponents):
67,281 (89% capacity)
-Non Marquee Games:
43,108 (57% capacity)
OB capacity 74,712 (1991-1993)
-Marquee Games:
74,968 (100+% capacity)
-Non Marquee Games:
49,575 (66% capacity)
OB capacity 74,476 (1994-2002)
-Marquee Games:
68,536 (92% capacity)
-Non Marquee Games:
39,472 (53% capacity)
OB capacity 72,319 (2003-2007)
-Marquee Games:
59,773 (83% capacity)
-Non Marquee Games:
44,995 (62% capacity)
Compared To
Dolphin/LS/SLS capacity 74,916 (2008-2014)
-Marquee Games:
59,411 (79% capacity)
-Non Marquee Games:
46,446 (62% capacity)
SLS/HRS capacity 64,982 (2015-present)
-Marquee Games:
50,545* (78% capacity)
-Non Marquee Games:
53,000* (82% capacity)
*Did not include Covid year
Take from this what you will, but it appears SLS has been a better venue for non-marquee games than the OB, but the OB was by far a better home field for big games, & that was pretty consistent, even during the lean years (95-99 & 04-07)
But, it also appears a 55-60k stadiumw/ an ability to expand by 8k is the perfect fit for us vs. a 65k+ capacity. Even the famed 2017 game had a shade over 65K.
Something else to note: The reason HRS doesn’t feel like a home venue is not only the color scheme, but it’s the schematics. Remember; we were all juiced when the stadium was renovated & seats were removed, but this stadium’s design doesn’t fit the collegiate feel. It’s why it’s a perfect venue for The World Cup. When the Chargers played at Home Depot Field in Carson for its temporary home, sure it was a much smaller stadium than a traditional NFL field, but it was so far away that it didn’t give LAC any home field advantage due to schematics.
The OB when it rocked, it rocked b/c of how it was designed. It was an extremely intimidating place to play. Even the crowds were sparse, it still felt like a home game. When I see our crowd at SLS, 50k be damned, it don’t look, or sound like a home field. ND & VT in 2017? Yes, but that’s a 2 game anomaly vs. 14 yrs of data.