Hey! No one's taking the title of worst troll away from me!
Actually I have found you both useful to read over the years and this was a dongle in a teapot.
The walkthrough videos should definitely have shown Vibrato XF on the solo instruments. The fact they didn't, mislead me into thinking it wasn't included. I expect marketing to display all the positives loud and clear and your friendly forum trolls to inform us of the negatives on these mostly non-refundable purchases.
Speaking of which, apparently they do refund, at least for store credit, if you act quick. Which is nice to know.
Videos comparing the Vienna instruments with eg. CSS suggest you have to struggle to get an emotive performance out of the Vienna recordings. I think what's going on is all the notes are played straight and get a lot of dynamic compression to ensure an even performance, you are then expected to use MIDI CC to coax an emotive performance out of this very vanilla, on/off, one-size-fits-all recording style. That's going to be really hard to make natural; perhaps the better strategy is to choose the library that fits the mood of the piece. That's my main concern with Prime Edition, it might not offer emotive depth out of the box.
But given the full Synchron instruments are so resource intensive this may be the best product VSL offers. If they get a set of Synchron Solo Strings and add them to this library, definitely a competitive offering. The first and second chairs offered here could knock down to second and third chair and the first chair replaced by the library that offers the specific mood you're looking for. The Synchron Player is excellent (contrast with the rickety old VEP) and offers a dry patch that you can match reverbs with other libs, plus timbral shift etc.
I think this looks like a solid product even if saying so makes me less of a troll. I'm happy they've gotten out of the Steinberg orbit with the ilok. I was waiting for that.