I keep hoping Pianoteq will improve significantly generation over generation. As it is, in the instances Modartt lets you compare directly across different generations using the same render, it always sounds differently off to me between the two, but not necessarily better in the newer generation.
I've also never felt the delta between Pianoteq's playability and that of the better sampled libraries has ever been as large as some folks make out. Maybe I'm just easily pleased or easily adaptable.
I don't hate it for what it is. If anything, I kind of just feel like I'm on the outside looking in. People who like it really, really like it. I wish I liked a VI as much as that. Even Modern D, which is still the best I've yet played, doesn't wow me as much as Pianoteq does its greatest fans.