Hello Mr Shipkov!
Thank-you for your response!
I've had much success plugging arrays into the pointCloudField.MagnitudePP, which as I'm understanding it, weights the influence of the pointCloudField according to it's source geometry/pointCloud inputs.
What I'm after is the ability to use the pointCloudField as an influence only during a specific portion of a particle's lifespan on a per particle basis.
As Aikiman mentioned in this thread years ago, with maya fields you can do this gimmicky custom attribute trick of naming a custom PP attribute "*_magnitude" and then plugging an arrayMapper with a ramp into the particleShape's age to control the influence of a field on a per-particle basis (over it's age).
While that weird *_magnitude trick doesn't work with pointCloudField, I thought it could be possible to string up a node network in a similar fashion with a ramp driven arrayMapper taking age information from a particleShape and point/weight information from another array, then feeding that into a pointCloudField's magnitudePP. So far, I've been able to control a pointCloudField's influence only by the age of the entire particleShape, but not on a PP basis.
I'd gladly attach a scene if you had the time to look.