It would be a lot more than "just one" recruiting class that would be disrupted. 2015 was a makeshift class. If a coaching change was made this season that would be two makeshift classes in 4 years. MR recruited guys to fit his system in 16 and 17', no guarantee they'd fit a new coaches system nearly as well so really you're looking at 3 to 4 classes.
One only need look at Iowa to see the importance of continuity and patience paying off. Ferentz went 11-24 his first three seasons. He then went 31-7 and won two conference titles in the next three years.
Year four 11-2 (8-0) Conference title
Year five 10-3
Year six 10-2 (7-1) Conference title
Recruiting is more than just talent, it's how that talent fits the system, and it's also about building depth in that system. Then comes the development aspect of the players in a system which happens over the 4-5 years they play in it. Each year there is improvement, growth, and mastery. Changing systems wipes that all away and starts us back at scratch. You don't plant corn and expect to harvest it a week later. Sure you can demand it ripen faster, fire the farmer for it not ripening faster, and replace him with a new farmer, but the corn isn't going to ripen any faster.
The young guys who are playing are playing right now are bright spots: Lamar Jackson, Tre Bryant, Tyjon Lindsey, Raridon, Farniok, Spielman, Ferguson, Bootle, Thomas, and the Davis boys.
Along with the redshirt freshman and this years class, we will be rewarded in the near future if we can remain patient and allow the growing process to take place.