Actually, for the specific example you mentioned, the Sound could be reimplemented using Replicator (since the six component Sounds differ only in their pan positions, this could be made a function of ?VoiceNumber. Here's an example of the harp gliss extreme time stretch implemented with a Replicator. In this form, you only have to change the sample in one spot to change all six copies at once.
Also, if you select your original sample in the Sound Browser, then create a Gallery on that sample with the Manglers option checked, you will get an example of an alternative way to do extreme time stretching on that particular sample.