It is worth nothing that memory was used systemically by Freud before this, as well as by Husserl as an essential element of his phenomenological approach to philosophy.

This is an odd distinction. When I read about a past that I did not experience first-hand (or watch a film about it, hear about it from someone else, etc.), I still mobilize my memory to recall my reading, watching, or listening of it, no?

Furthermore, aren't acts of remembering always involving the imagination?

Interesting. I am curious as to what he will put forth as the laws governing its evolution and its cohesion as a united totality.