After listening closely to all the demos, I think VSL has another world class piano product here. I'm probably going to pick it up.
I do think, though, that all developers are up against the wall of what sampling technology can do when it comes to pianos. There's a bunch of stuff happening in a real piano that traditional sampling methods just can't capture. They really can't get that magical interaction of multiple strings on a soundboard (a soundboard resonance IR doesn't really do it). They also can't get that beautiful blur you get when you re-strike an already ringing string and add more energy to it. Individual pedal-down samples are nice, but they won't give you that. Lots and lots and lots of stuff happening in a piano, and a sample library can only hope to give you a part of it. And, these are the types of things you really hear better on a dry and up-close recording (hence, the attractiveness of adding distance and reverb to a mix). For me, the closer the mix, the more I can clearly hear that each note was recorded as a separate event, and not played together. More distance makes things more convincing, as well as thicker textures with additional instruments. In some contexts, you can't tell the difference. But in others, you really can.
I would definitely not say that having a convincing instrument (that sounds completely real, playing anything close up) will never happen, but it's going to take some kind of ridiculously sophisticated model to really get the job done. We're not there, yet, and I don't see it on the horizon.
Interestingly, over time, the market (listeners and players) might grow used to the qualities sampled pianos have and prefer them to the real thing (at least, in some situations). Not unlike the Hammond organ. When the Hammond organ came out, the Hammond company really wanted it to totally fool the audience into thinking it was a real pipe organ, and at blind tests, a lot of people did think it was. Nowadays, we discern recorded sounds more closely, and no informed person is going to be fooled by a Hammond. But the Hammond sound isn't going away.
I kind of feel sorry for developers who have lived with these instruments for huge amounts of time as they're assembled. They're obviously truly focused on the instruments, and have fretted about the sound, flaws and total effect of the VI. I'm sure they KNOW that as soon as they release the product and post the demos, people are going to immediately say: "We want to hear it totally DRY and CLOSE-UP!!!" This request is certainly not a surprise to them. But, it's like asking a big movie star to leave their house without makeup, styled hair and nice clothes. The paparazzi are always waiting in the bushes with telephoto lenses.