I like this map because it's fair both in terms of respecting Wisconsin's purple-ness by creating lots of swing districts and because each district makes sense geographically and for the most part looks nice.
Here's the statewide view:
Now, district-by-district.
WI-1: Paul Ryan (R)
2008 PVI (keep in mind Wisconsin was a point or two bluer in 2008 than in general): R+2
Rating: Lean R
Cities: Milwaukee's Suburbs (Oak Creek, Greenfield, South Milwaukee, Cudahy, St Francis, Muskego, Vernon, Franklin, Caledonia), plus Racine and Kenosha
This district fits nicely into the southeast corner of the state. It takes in Racine and Kenosha, which are kept together under any fair map, and then goes north and west, taking in much of Walworth County and southern Milwaukee and Wauke$ha counties. It does include both suburbs, small cities, and rural areas, as well as a few thousand residents of Milwaukee, but it almost has to be drawn this way. I left of Ryan's hometown of Janesville, which doesn't really fit here.
WI-2: Mark Pocan (D)
PVI: D+17
Rating: Safe D
Cities: Madison, Janesville, Beloit, Fitchburg, Oregon, Sun Prairie
A Madison-based district must be drawn, and I then moved outward to take in the parts of Southern Wisconsin neither Ryan nor Kind got in their districts. Dane County is split, but otherwise the other districts can't be drawn as nicely.
WI-3: Ron Kind (D)
PVI: D+4
Rating: Likely D
Cities: La Crosse, Eau Claire
This mostly rural district is home to Ron Kind, who represents his rural district well by being a pretty reliable Dem vote who splits with the party on gun control. The southern half of this district is getting bluer while the northern half is getting redder, so it should stay close to D+4.
WI-4: Gwen Moore (D)
PVI: D+20
Rating: Safe D
Cities: Milwaukee, Wauwatosa, West Allis
This district is Milwaukee and some inner suburbs. It almost has to be drawn this way. It's majority-minority, a real rarity in the Upper Midwest.
WI-5: Jim Sensenbrenner (R)
PVI: R+14
Rating: Safe R
Cities: Waukesha, West Bend, Mequon, Brookfield, New Berlin (all suburbs), Sheboygan
The Milwaukee area is split between Ryan, Moore, and Sensenbrenner, but there's a bit of population the latter still needs, so I drew him up to Sheboygan, an old manufacturing town. He's safe and it looks pretty nice.
WI-6: Tom Petri (R)
PVI: EVEN
Rating: Tilt R
"Cities": Fond du Lac, Watertown, Stevens Point
Longtime incumbent Petri gets a tough district, with about half of it new. It's basically the central part of the state and is very rural. I think incumbency would give him the edge but a wave year would send him out, and he might retire rather than face a tough race.
WI-7: Sean Duffy (R)
PVI (bigger GOP trend here than other districts): D+1
Rating: Tilt R
"Cities": Superior, Wausau
This district is almost entirely rural, and it's ancestrally Dem. A Northwoods district is a natural configuration and this is the result. Like Petri, Duffy loses even in a small wave. With time and the trend here, however, he could become a bit safer and make this Lean R rather than Tilt R.
WI-8: Reid Ribble (R)
PVI: D+1
Rating: Tilt R
Cities: Green Bay, Appleton, Oshkosh, Neenah, Manitowoc, De Pere
The Fox Valley district is both clean and a strong COI, with Manitowoc added for population.
Basically, the result of a clean Wisconsin map is three Dem seats, two GOP seats, and three slightly GOP seats. Only three seats are completely safe, and wave years in Wisconsin would be more exciting than ever.