I did some more driving today, as well as yesterday. I even got a bit cocky and went part way down a REAL road.*
(* Admittedly, it was an empty farm road, but sshh.)
The Hooded Man in Winterfell is Tywin Lannister. He faked his death, because with that kind of money anything’s possible, and he’s having an affair with Roose, hence his presence.
This, and “Euron is the dusky woman” are the only theories anyone should pay attention to.