I think most are reasonable to know that the ceiling is the ceiling, not the expectation. So, in general 7-5 seasons are not necessarily disappointments, but 7-5 seasons coming off 10-3 ones, where you had (by S&P+) the most returning production in the nation, and a schedule where you had no ND, no UW, no Iowa, with UM, OSU and NW at home, is one where there is disappointment, particularly the way it ended with a sputtering 1-2 finish with absolutely zero offense.
I think if MSU can get healthy, and avoid early NFL departures (Williams, Willikes and Layne have all been thrown out as early entran possibilities) I think with changes on the offensive staff, expectations will be similarly high next year.
But expectations for 2020 will likely be way down, that's looking like a rebuilding year. Most Spartan fans know a rebuilding year looks like 6-6, 7-5, maybe 8-4 with some breaks. 7-5 in 2020 won't be a disappointment.