Eh. I think it's the team of Pat and Vanna that's more the comfort as a whole and even then, I'd consider Vanna to have the higher profile in likability, something Pat would admit and has joked about in the past.
In the past, I've wondered how the show would've been with Pat but someone else other than Vanna. Sure Pat started with Susan still there, but if Vanna had exited to do something else, and Pat stayed as host, I'm not sure I would've been a fan of that. Sorta like Johnny sans Ed or Conan w/o Andy (to a much lesser extent).
So I agree about Vanna's popularity being higher than Pat. I think the show would've been fine regardless (and I think WOF will be very good in the aftermath of Sajak & eventually White), but the duo of those two is something I don't always think of.
Finally, I never thought of the totals in terms of screentime or how often I've heard Pat on Wheel. IDK, I think Sajak's presence is good enough to where I've never wondered why he isn't seen or heard from compared to Bob or Alex on their shows. However, finding a successor, while not easy, will be far from super difficult or impossible
