I used to think a little like you Craig, but you are missing the forest for the trees on the OT. Some of the big messages are:
There is one God but also a rich and diverse variety of other extant supernatural and human/supernatural entities.
God communicates to us through intuition, voice, visual theophany, poetry, fiction, song, history, myth and human rationality.
God has an active interest in human development and protects us under a mutual covenant.
God reveals itself to humanity in a gradual fashion. Not exactly dispensational, but rather progressive revelation.