First called this name by Aristotle in the West, metaphysics is not
always considered a system, and bears some resemblance not
only to Eastern views of a similar kind, perhaps generally known
as 'cosmology' or 'cosmogyny' or 'the knowledge of things', but
also to  the mathematical concept of the lemma, through the
relation of material science to spiritual and abstract matters
purportedly beyond ordinary conception.

The overall concept of metaphysics tends to be additive rather
than singular. Concepts like knowledge, physics, God, and
technology have had huge influences at various times, often
continuously. There is a danger of losing large concepts like
these in 'mere inflections' which amount to the preference of one
power of explanation over another. The absurd greatness of
existence is one matter, and arriving at a rational explanation is
another. Technology might not mean as much as we think it does,
but it certainly means more than what we use to think, unless
existence as we know it is an illusion.

Illlusion has been one of the earliest dominant concepts in
metaphysics, and it is associated with the most profound power of
creating everything that appears for mortals. Another concept
that has major importance is the containment of the large within
the small, the sense of how ordinary values are compromised
when they come up against something larger, more powerful, or
more magical. Simultaneously, norms of technology have done
much to replace the assumption of a magical foundation with
something more like economics, suggesting that the more magical
realities are locked off from ordinary mortal existence,or only
exist through hallucination.

Finally, we can consider that there are at least four or more major
approaches to metaphysics, regardless of the specific perception
of reality:

1. Monumental Metaphysics (the metaphysics of Creation): In
this view, the ontology is a growth process as of larger and
smaller men, and everything that is most true is constructed
painstakingly from infinite smaller parts---which together
constitute the essences of life. Pain in this view is an explanation
for differences in greatness, necessary actions, and so on and so
on. The major scheme is teleology, but it is progressive. It simply
exists in a very large time scale, and many progressions and
digressions can occur for any one person. The highest good is
wisdom. This view might be critiqued as idealistic. Every good
seems to come from someplace better, indefinitely. This is the
view favored by philosophers, prophets, and architects. The good
is the great project.

2. Mystery Metaphysics (the metaphysics of Kings): This is a
pluralist view that holds that many different 'gods' and 'treasures'
deserve venerable worship. Life is the explanation of the relation
between the 'people' and 'treasures' of importance and the
common people, who seek to attain possession of those objects
and attributes. In this view, pain is explained as the struggle for
(often temporary) worth and purpose. Practicality and
admirableness are high virtues, but ultimately so is magic. This
view might be critiqued as materialistic or obscure. Life seems to
exist as a kind of exception, a mysterious chance happenstance.
This is the view favored by psychics, alchemists, and buddhists.
Evil is a type of expense.

3. Animated Metaphysics (the metaphysics of Middle Earth):
This is one of the possible divine views of metaphysics. The world
responds to one's special desires, made possible by the Mandate
of Heaven or Divine Contract. Through the lens of this privilege,
the world 'talks back' and magic can be evoked and created. This
is the view of Egyptian Pharaohs, Chaldean sorcerers, yogis, and
some Greek magic practitioners. The greatest good is attained by
those with the greatest rights, and lost for those without rights.
Evil is something that happens when there is a lack of skill or
lack of divine Justice.

4. Illusionary Metaphysics (Practical metaphysics): This is simply
the collection of realities that exist by the relation of experience
to the unreachable experiences, often described by Karma.
Essentially, there are laws that determine what feelings and
aspects of the world are available at a given time. One can guess
from others' great achievements that they have different, more
desirable realities. It is the work of virtue to aspire to attain the
same greatness in the world, or in the spiritual world. Commonly
this view is mistaken for simply the spiritual side of life. But, it
actually determines material attainments just as well. One must
assume that kings have different options than the common man.
But the difference is that the king must obey a contract. The
common man is free, although the common man is less fortunate.
Pain in this view is contact with baseness, and evil is association
with base people.

Since these seem like ethical perspectives more than logical
ones, I will post metaphysics as an ethical system rather than a
formalistic one.