Alright, so here's how I'm thinking about this.
Last season we went 9-3 in the regular season, going went 4-1 in one-score games. There's some luck there. If you take away the luck you'd expect that to go either 3-2 or 2-3. Given that 3/5 one-score games were home games, and you kind of expect the home team advantage to be a relevant factor in those kinds of games, I'll go with 3-2. So If we had been a bit more neutral in the "luck" factor maybe 8-4 is where we end up last season.
This year we should overall be a better team, given the guys we're returning. That helps, even if our luck is not as good. Also seems like a potentially easier schedule (though that's hard to say at this point - last year's schedule turned out to be easier than it seemed and this year's could theoretically go the opposite way).
I'm guessing 9-3, with equal odds of going 8-4 or 10-2 instead. I hope we don't have as many 1-score games as last season. The progression this team needs to make is to put away this year's equivalent of Kansas, Nebraska, Purdue, and Rutgers and not have to rely on late-game heroics. If we can do that, then I'd increase the odds of going 10-2. If we end up battling close games in half our schedule like we did last season, then I'd go the other way and increase the odds of 8-4.
Not going to predict specific games, so much as group them:
Games we probably don't win: Ohio State (expect to lose this one)
Games we could easily win or lose: Indiana, USC, Washington (expect 1-2 wins out of this group)
Games I like us to win, but not a lock: Duke, Rutgers, Wisconsin (expect 2-3 wins out of this group)
We should not be losing these: WIU, WMU, Purdue, Maryland, Northwestern (expect 5 wins out of this group)