Hi Paul,
Without knowing or caring about how VSL is internally structured, I do assume your best intentions, while realizing that your hands may be tied regarding certain matters or decisions. A friendly interaction with your customers is always welcome and appreciated, and sometimes it may be all that's needed.
For such a simple request as the silent key though, just being friendly stops being enough after 3 years. Whatever the reasons are, these are no longer relevant when the implementation of such a feature can be written, compiled, tested, packaged into a new installer and uploaded on the server during literally one lunch break. 3 years and counting for the implementation of such a simple feature would not be understandable even for a product that costs €10 and I hope you agree that this is a little hard to swallow.
Regarding the -- let me put on my soft gloves and merely call it "sub-optimal" -- sympathetic resonance, this is a little different, since this is not a new feature request, but a fix request. There is a widget on that UI which reads "Sympathetic". As long as it's on that interface, it becomes one of the features that customers have paid for, a feature they've learnt to take for granted in the last decade because most, if not all other VST pianos have implemented it substantially better than VSL. After 3 years of waiting, a customer is not interested in hearing about how difficult such a feature implementation is, especially since your products are priced much higher than the ones that have implemented this feature successfully. Not even having an ETA after all this time makes matters worse.
What's even sadder is the fact that there are other issues that bug me even more than these two, in all 5 VSL pianos that I own, and you made it pretty clear to me in previous posts that these won't get addressed either. It's a pity, really. The potential for something amazing was definitely there, these could have been THE vst pianos, period. Instead they are merely good but overpriced pianos with a few issues, and the fact that they are packed to the brim with velocity layers does not change that. That's just my opinion.
I hope that you'll find at least tiny bits of my critique useful and I sincerely wish you and VSL a world of success.