Thanks for your questions!
1) We still don't have a "silent key" yet.
2) The algorithm that calculates the Sympathetic Resonance will hopefully be improved in the future. I agree it is not as good as it could be.
Unfortunately I don't have a time-frame for this yet, but we have those requests on our list.
Glad to hear there's a possibility of "silent key" in the future, Paul! Since that's "just" a matter of allowing something like a velocity of 1 to be trapped and not create a sound, seems to me that it would not have as sophisticated coding requirements as would creating a better sympathetic resonance algorithm.
I realize that at the moment your programmers must be pretty busy getting Vienna Assistant into shape, though...