Syracuse yards per play in 2013 (year before Lester took over in-season) ranked 104th, then 105 and 100 in his two years as OC.
WMU yards per play in 2016 (year before Lester took over as HC) ranked 14th, then 97, 54, 28, 6*, 25, 127 in his 6 seasons as HC.
Seems like he just kind of maintained the status quo at his prior jobs, with the bottom falling out his last year at WMU. My guess is Iowa’s offense next year sees little improvement other than the dead cat bounce into the 90s that comes with someone other than Kirk’s son, Brian Ferentz running it.