Questions for those that wish to take the time to answer them:
Has he coached any notable big-name/NFL talent?
Not really, in terms of NFL level talent. Stepfan Taylor did have back to back 1,000 yard seasons during Sanford's term as RB coach (2011 and 2012). Hogan was 232 /352(66%), for 2792 yards, 19 TDs and 8 INTs, in Sanford's one year coaching QBs and receivers.
Does he give us an immediate advantage with any specific prospects?
I don't follow recruiting so I couldn't tell you. But he must be a pretty decent recruiter. He was named Recruiting Coordinator at Stanford in his second season as an assistant at Stanford. And Boise State recruits California big time, so I would imagine that he has established some good relationships in that hotbed.
Does he plan on staying here for long? Or should we expect him to be gone at the first HC spot that comes his way?
Who knows? He says that his goal is to be a Head Coach. But he also said that he understands if it takes 20 years, and is ok with that.
Is his offensive style consistent with Kelly's?
He is absolutely committed to running the football. He and Kelly might have some minor issues there, but I wouldn't think that they would be too big a deal.
What's his pedigree for coaching QB talent?
According to Sanford, he first caught the coaching bug as Jared Zabransky's backup at Boise State. He was the conduit between the coach and Zabransky, according to him, and he found that he had a great interest in the coaching side of it. He was QB Coach and Passing Game Coordinator, at Western Kentucky, in 2010. And he coached QBs and Receivers, at Stanford, in 2013.
Why would he turn down OSU but come to ND?
Not sure. Could be the Slime Effect? (the integrity gap between Kelly and Meyer)
How did Boise St. do last year on offense?
Total Offense: 494.3 yards per game; 14th in country
Passing Offense: 280.4/game; 23rd
Rushing Offense: 213.9/game; 29th
Scoring Offense: 39.7/game 9th
Of particular note: their leading rusher ran for 1800+ yards and 28 TDs for the season