University admins obviously accepted mediocrity for most of the '60s/'70s/'80s/'90s and now it's nice that the university obviously no longer accepts mediocrity
Ohio State's record, decade-by-decade, from 1960 thru 1999:
60s: 68-21-2. Best season 10-0 (1968, national champs), worst season 4-5 (1966). Two national titles ('61 and '68) and three conference titles (two outright, one shared with scUM).
70s: 91-20-3. Best season 10-0-1 (1973) plus 11-1 seasons in 1975 and 1979. Worst season 6-4 (1971). Eight conference titles (three outright, five shared with scUM).
80s: 82-35-2. Best season 10-3 (1986). Worst season 4-6-1 (Cooper's first year). Two shared conference titles. This record is skewed a bit by Cooper's first two years as head coach (12-10-1 '88 and '89). Bruce was Mister Nine and Three in the '80s, going 9-3 every year from '80 thru '85 and then going 10-3 in '86, before going 6-4-1 in '87 and getting fired (for a record of 70-25-1 in the '80s).
90s: 91-29-3. Best season(s) 11-1 (1996, 1998). Worst season 6-6. Three shared conference titles, and four runners-up (three outright, one shared). The overall record is marred by failures against scUM and in bowl games (3-6 in bowls, including the infamous Liberty Bowl loss to Air Force).
In summary, the '60s was hardly a "mediocre" decade, averaging a 7-2 season every year, with two national titles ('61 and '68). As for the '70s, not sure how averaging a 9-2 season every year, with a conference title almost every year, is "mediocre"...we were also two Rose Bowl losses from national title in 1975 and 1979. The '80s, at least under Bruce, were not "mediocre" either, but not quite up to the standard Woody had set from the late '60s thru the mid '70s. The first three seasons of the '90s started somewhat mediocre, but we did have a great six-year run afterwards which had five 10+ win seasons and two major bowl wins, along with going 9-3 on average for the decade, so I'd say the decade as a whole was above "mediocre".