My opinion: The list is starting to resemble something that could be defined as a "Hall of Fame" of sorts, although I also think a Top "10" is way too few games.
I could accept that most of the list certainly belong there.
On the other hand, Pinball greatness is completely subjective. As others have pointed out, everyone is going to have their own list. I think of my collection as being comprised of my list of "Favorites". Those are games that I like enough to drop the coin, and it appears I still enjoy them enough that they are currently winning the competition for limited space. They certainly don't have to be among the Greatest Of All Time, but they have to work for me, my friends, and my family. For the record, I only own one of the current Top 10, and there are only 2 others I would consider picking up, but I would have to find a pretty good deal.
Having said all that, I'd happily drop a bunch of quarters in any and all of those games if I were to find them on location (except TAF. That game never really clicked for me, and no, I'm looking for one. ).
That's my perspective as a collector.
If I were an operator, though, I'd be keeping a very close eye on that list, and I'd try hard to make sure that I had as many of those games as possible on route.