Herb,
I was very interested and a little disturbed by some of the things you've suggested in this thread - the idea of using dynamic samples for ordinary
notes is something I haven't done, but I can see how it could be very valuable as it is true that the dead, unchanging, mechanical uniformity of tone is something you always hear with bad samples but never hear with live players (if they are good ones).
I wish you did regular tips like these - like a separate forum "Herb's Tips" or something like that. I'm particularly interested in how you actually use what is actually available when recording your own pieces, rather than sampling theory and computer equipment discussions.
Also, I'm impressed by your purist approach with the layering issue. But I have to admit I totally contradict it! I have been layering samples regularly on ensemble instruments, especially for attack, for this reason - if the attack is highly velocity sensitive, then it can add a great deal of additional expressiveness to a sostenuto sample. This applies to your string detaches as well, since they are so beautifully recorded and very short. The doubling of size of sound is not an issue with attacks, because you hear the attack before you have even mentally registered the sustain.
BTW I thought the Parachutes demo was AWESOME. Though I love J. Strauss I can see why you replaced the delicate string tremolos and piano legato horn of the intro to Blue Danube with the blatant ff brass power of Jerry Goldsmith.