Izzo hiring his first "outsider" assistant coach since Dane Fife I think has helped as well. Dusty May has done a great job, but not retaining Saddi Washington was a HUGE miss. Juwan Howard retained him, and he is a great big man coach. I think having better PG play is probably the biggest factor in MSU's jump, but they haven't had good frontcourt play since Tillman left. Saddi took two guys who were on last year's roster, plus a transfer from Longwood, and has totally transformed them.
His dad played for MSU, and he grew up in Lansing. He played for WMU, and has coached at Oakland, Michigan, and now MSU. I think he might be a sneaky choice to replace Izzo.
The other thing is that his first job was as an assistant coach at Romulus HS...under Nate Oats. That has to be an all timer of a public HS basketball coachig staff