As various outlets, including ESPN and The H-T have noted, Tom Dienhart of Rivals reports that Doug Mallory and Mike Ekeler will be IU's co-defensive coordinators. While this report has not been confirmed by IU or either of the candidates, the denials have been lukewarm. It's not currently clear whether one or the other would be the lead defensive coordinator.
Mallory, a Michigan graduate and the son of former IU coach Bill Mallory, currently is the defensive coordinator at New Mexico under Mike Locksley. He worked as secondary coach for Les Miles at both LSU and Oklahoma State, and spent a year as LSU's co-defensive coordinator before moving on to New Mexico. He was a member of his father's staff at IU from 1994-1996. As if the connections between Wilson, the Mallorys, Terry Hoeppner, and Randy Walker weren't dizzying enough, Doug Mallory has a connection to Jack Harbaugh, the father-in-law of IU basketball coach Tom Crean, in that he worked as an assistant for Harbaugh at Western Kentucky in the early 1990s (at the same time that Crean was an assistant for WKU basketball coach Ralph Willard).
Ekeler currently serves as the linebackers coach at Nebraska. He played for the legendary Bill Snyder at Kansas State, and worked as a graduate assistant at Oklahoma and LSU before becoming linebackers coach at Nebraska. It would appear that Ekeler followed Bo Pelini from Oklahoma to LSU to Nebraska, which I would say speaks well of him.
I certainly don't have the sort of insider football knowledge necessary to evaluate these coaches' ability. What really impresses me about these hires is that as with Wilson himself, I love their pedigrees. These two guys have played or coached for the following head coaches: Bo Schembechler, Bill Mallory, Jack Harbaugh, Les Miles, Bill Snyder, Bob Stoops, Bo Pelini. That's not a complete list of their respective head coaches, but it does show that each has been hired by some really excellent coaches.