In article , "Richard D.
Saam" writes:
[[Mod. note -- This wording presupposes that there are "voids" and tha=
t
they are "established". I know of no good reasons to reject the null
hypothesis that there's no particular connection between these size
scales.
-- jt]]

It is acknowledged that
the universe size (uniform?) distribution parameters
are not at equilibrium.

If you mean that the sizes of SOME things change with time, then yes.

Indeed. Note that galaxies range over more orders of magnitude in mass=
..

Size may be more important parameter.

Why?

Between solar-system scale and galactic scale there are things like
giant molecular clouds; between galactic scale and Hubble-length scale

No, the molecular clouds are between planetary and galactic radius
in a size range 15-600 light years (1.4x10^19 - 5.7x10^20 cm)

This is also between solar-system scale and galactic scale. (It is also
between atomic scale and galactic scale.) Normally one uses the next
lower and next higher scales to denote a range.

but the unit of measure is the galaxy as in clusters of

This is somewhat arbitrary, based on objects visible to and recognized
by us.

and the filamentous, layered structure of these superclusters
may be an indication of galaxy orthokinetic formation by shear
associated with H =3D c/Hubble Radius.

Why?

There is also
the structure of dark matter, about which less is known.

A very closely studied dark matter entity is the Bullet Cluster
with size ~.5 Mpc (1.5x10^24 cm) falling within galaxy size.
There may be more diffuse dark matter structures
with a precursor star planetary characteristic
analogous to molecular clouds above.

Clusters are rare objects. Most galaxies are not in clusters. Most
dark matter is probably not in clusters. The Bullet Cluster is not
representative of the universe.

To a first approximation, the sizes of solar systems and galaxies don't
change with the expansion of the universe.

Our solar system is the star planetary system reference
with its size going out to the Kuiper Belt at
20 - 50 AU (3.0x10^14 - 7.5x10^14 cm)
and out to the Oort cloud at
0.8 - 3.2 light year (7.6x10^17 - 3.0x10^18 cm)
The Kepler spacecraft has found planets in other star planet systems
but is not sensitive to more diffuse Kuiper and Oort like structures
that probably exist.
Future spacecraft may obtain information
on analog Kuiper and Oort components in these star planet systems.

Right.

Aren't the early galaxies (~million years after the big bang)
much smaller (primitive) than present galaxies

Yes; galaxies grow with time.

suggesting that star planetary systems had not formed at that time?

Planetary systems probably formed along with the corresponding stars,
but this is unrelated to the size of the galaxy.

The Hubble radius changes if
the Hubble constant changes. The Hubble constant has increased since
the big bang, but as the universe approaches exponential expansion
asymptotically, the Hubble radius will approach a constant value.

as perhaps galactic and star planetary system sizes
approach a constant value.

Why? The scales of galaxies and planetary systems are not influenced by
the size of the universe.

[[Mod. note -- In addition to the things the poster mentioned, globular
clusters and dwarf galaxies are some other important astro-things that
lie between solar-system and galactic size.
-- jt]]

In as much as a globular cluster is a spherical collection of stars
that orbits a galactic core as a satellite,
a globular cluster may be considered stars as part of a galaxy
and within the galaxy size.

It seems like you are defining things to meet your expectations.