Hi Excal
A few clarification comments.

You state that,
"First Fundamental Postulate: The physical universe is composed entirely of one component, motion, existing in three dimensions, in discrete units, and with two reciprocal aspects, space and time. "

And earlier you state,
"In fact, it will be shown later that the degrees of freedom associated with space and time in modern theories are actually more properly attributed to motion, and that exactly three degrees of freedom are sufficient for all geometries, "

In these statements the term “space” is actually referring to a distance measure, (v = ds/dt ). The volume of spacetime is realized by incorporating three degrees of freedom. Also the first postulate includes so many ideas, that the meaning of the first postulate is diffused. Might I suggest the following?

Rewriting the first postulate.

First fundamental postulate : the physical universe is compose of one component, motion. Motion describes a reciprocal relationship between distance and time, V = ds/dt.

Second postulate. Motion is expressed in space by allowing motion to exist with three degrees of freedom.

Third postulate : Motion is expressed in discrete (or Quanta sized ?) units.

Snowflake.