and yes, it would be easier to have 20 different violin players recorded... especially the articulations which don't have variations like non-vibrato sustains and detache. i think about time stretching those to make them 'extra players'. other possibility might be to add orchestral or chamber strings. needs more time to try out.
i like the flexibility of this library. but i have to keep an eye on the computer ram/cpu (i have a slave macmini quad i7 with 16gb). when playing trills or fast runs the voice counter rises up to 1250 voices and give klicks and pops from about 1000 voices. offline bounce makes a crackle free recording but it's not nice to arrange without a clear signal.
i just ordered a new macpro... we'll see if this problems will be gone (and replaced by others) :-)