Looking at next year....
Above poster is correct, Minnesota should be damn near unbeatable. They lose Rombough and Torchia, but Mead should be good for 14-20, and their thrower should replace McGinnis' points.
Wisconsin will be solid but should take a step back. They lose Miller, Bolas, Larkin, Groce, and their long jumper. Because they're one of the few Big Ten programs that recruit nationally, they are more able to re-plenish the rosters with immediate contributors.
OSU loses See, Woodard, and Simms (who wins the award for seemingly being in school for a decade), but returns a couple of freshman studs and a strong sprint crew. They'll be in contention for Top 3.
Iowa brings back everyone save Varner, so they'll be in contention for a top 3 finish as well. Iowa seems to have the strategy for competing at the conference level. Let all of the nationally ranked distance crews beat up on each other at 800-10k, and then score a ton of points in sprints and relays, plus add a few in assorted field events.
Indiana loses Coover and Glover from their sprint crew, but returns everyone else. Helmer gets a lot of grief on this site (much of it justified), but his guys were pretty solid this weekend. Poore might wind up being pretty damn good before its all said and done. Derek Drouin is good for 12-15 points per meet, and if they find som throwers, they might improve a little.
Illinois loses a couple of points in the jumps and the middle-distances, but they may have maxed out on points this year. Riley can't possibly be any better, and a 3rd place in the 10k is about as good as it gets for their distance crew. Can't see them being any better next year.
Penn State loses a few points in the jumps, but returns most everyone else. Unless they develop a sprint crew, they won't be getting much better though. Too many of their stars are congregated solely in the throws and in the 800. They have a couple of decent distance guys, but it can be tough to score in the distnaces in the Big Ten.
Michigan State returns everyone. I was surprised when I looked over their results and roster, but they may turn some heads next year. They were 7th, but Wells was injured and didn't run the 100 or 200, and they dropped the stick in the 4x1. Wells can be a poor man's Riley next year. They also return 20-30 points in the throws and their decathlete/7ft hj-er. (defending discus champ, rs-freshman shot putter who would have challenged for top 3 this year, and their best thrower from this year who must have been hurt or sick this weekend, but he likely would have been top 5 in disc and hammer). If they can find some points in 400/800, they will likely be top 5.
Purdue is going to have a rough year next year. They have long been able to make their mark with throws, but Penn State, Iowa, Minnesota and to a lesser degree Michigan State have started to enroach on that territory. They lose some points in the jumps, and are pretty bad at all of the running events. They'll fight to stay out of the basement...
With Michigan. No idea what happened, but they're bad and probably won't be any better next year (although no idea about their incoming recruits). They're throws will be depleted, and I'm not entirely sure wheter Shotwell returns. He'll help if he's back, but their once vaunted distance crew was spectacularly bad this weekend, and they lose Williams. Forys is decent, but unless their new Kiwis get a ton better in a hurry, it's going to be tough to return to the top half of the conference.