Just pointing out that, in the end, that first season Hazell played 3 BCS bowl teams (OSU, MSU, NIU) with 9 overall bowl teams (IU ended up at 5-7 that season).
Last season, Purdue ended up playing 9 bowl eligible teams once again with NU ending at 5-7 for nearing 10 total bowl eligible teams.
At this point, Purdue has 6 teams that are bowl eligible already (Marshall, BGSU, MSU, Wisconsin, Northwestern, Iowa) and teams that can still become eligible in Indiana, Minnesota, Virginia Tech, and Illinois (all have 4 wins). To me, that isn't an easy schedule at all. I am not making excuses and that is sort of the thing you get playing in the B1G, but MB did Hazell no favors trying to build a program when his non-conference opponents (in the FBS) are nearly all bowl eligible every year. That's a tough recipe for success.