Perhaps there's something to be said about preconceived notions. What I've seen of Hanifin on the Flames causes me to think he's a rover, and one of the reasons I also think this is because I stumbled upon an article about him before he was drafted from a former coach that said he's a thoroughbred rover that most coaches are trying to rein in, but instead he should be let to run like he instinctively wants to run. I'll try to see if I can dig up that interview (I believe it was lengthy).
(pay walled and my subscription expired)
Flames' Noah Hanifin accustomed to racing up the hockey ladder
Maybe his overall NHL isn't as pure rover as Brodie and perhaps not as pure rover as I identify. But I do recall one of the reasons I was so dead set in my understanding of Hanifin as a rover was due to the fact that it seemed like Hamonic was relatively OK with basically everyone on top line to bottom line up until he was paired with Hanifin. That's when it seemed like he had completely no clue how to cover for his partner.
Hanifin finishes freshman year at Boston College
I think OKG's definition has merit too. Players that cross over in front of the net, in the slot and do aggressive net front offensive plays pique my rover definition more than players that skate behind the net and pop back out. Maybe that's why I identify Hanifin as a rover.
Still though, I don't get how Hamonic just couldn't figure out how to defend for his d partner Hanifin if he was just a straight up an offensive dman. I could be absolutely wrong in defining Hanifin as a rover, but somewhere along the lines, I made up my mind that Hanifin was a rover.
I don't think Tanev will struggle as much as Hamonic to defend for Hanifin. At least, I really hope he doesn't..