Pros: 100% natural snow, big hill by midwestern standards, spectacular view, good terrain for all abilities, laid back vibe
Cons: no snowmaking (not always a negative) old lifts, limited amenities
Unfortunately, that system wasn't economically viable, so it's now being run by the folks who run Mt Bohemia. I haven't been since the switch, so what follows is what the porkies used to be. Hopefully, they haven't changed it too much. Certainly the snow and the hill are the same, and that's the strength of the Porkies.
The Porkies ski resort is directly in the lee of the Lake Superior lake-effect snow band. It gets massive amounts of snow. There is no snowmaking, so you can be assured of skiing 100% natural snow when you visit the Porkies. (I know this part hasn't changed). This means shoulder season can be spotty, but when it's good it's very very good.
Until Mt Bohemia opened up with it's ~825 foot vertical drop, the Porkies reigned as the "giant" of Michigan skiing with 630'. It's a big hill by midwestern standards. The view of Lake Superior is nothing short of spectacular.
There's terrain for every level, and both lifts serve green, blue, and black runs so families can ride the lift together and take the trails that fit their individual ability
I don't think there's a terrain park. There's no nightlife, or night skiing for that matter. No lodging either (although I think there may be some rustic cabins that you can XC ski to). It's strictly a skiing venue.
Since I was there last, they cut a bunch of trails to the west - these are not lift served; you have to hike or take a snowcat.
Bottom line - a great place to ski and get away from it all. It's pretty remote.