Obviously Michigan is the most likely state to flip, and from there, PA and WI FL are the Democrats' best bets. Clearly, Trump's landslide 0.8% win in Wisconsin New West Virginia is the new Republican floor there, and the state is now a dark red state that will never go Democratic again.
Live under the thumb of the local Republican party here for years, and you will actually believe this. Even when they lose the popular vote, they keep the chambers. This time around though, they gained more seats even though it was thought that they had hit their ceiling already. If the Democratic party continues mismanaging the state the way it has, your sarcastic rant might have more truth to it than you might care to admit.
I don't deny that since 2008, Democrats have done terribly in Wisconsin. I think there are many reasons for that, but I don't think it's so much that Wisconsin is quickly trending R as it is that Democrats haven't run the best candidates/campaigns there. The right kind of Democrat can absolutely still win Wisconsin, and if (again, if) 2018 proves to be a good year, Republicans could face quite a bit of backlash there. While Trump may have room for growth in the WOW counties, he could easily lose a lot of the Obama voters he won in the Southwest, as well as places like Kenosha/Racine. Considering Trump's margin, as well as the fact that Clinton took the state entirely for granted, I think people saying that Wisconsin will be Lean/Likely R in 2020 are jumping the gun, to say the least.