As I said in another board, I would not be surprised if Hillary won with a Republican Senate majority, and even a rather secure one like 53 or 54 seats.
That's extremely unlikely. The same factors working against red state Democrats (increased polarization, decrease in split ticket voting) will also work against blue state Republicans. If Republicans break even in the Senate, Hillary almost certainly lost. You can make the argument that the Republican incumbents are unnaturally strong in 2016 (I don't see the logic behind it since most of them haven't been tested statewide outside of a low turnout Republican wave, but I digress), but people were saying the exact same thing about Pryor and Landrieu in 2013/2014. How did that turn out again?
That's not really the case unlike 2014. Only Kirk's state is blue, I guess Johnson, Ayotte and Toomey have a blue tinge but they wouldn't be really defying partisan gravity to win. Rest are either genuine swing states, or worse.