Reading a little bit on this thread and this is an area where I have come to agree with Orthodox Christianity.

The Bible does say that God is Spirit and I do believe encasing him in a human body (even an exalted body) is to diminish the greatness..the vastness, the immensity of who He truly is..

That doesn't mean He cannot show himself, at times, in a "physical" way, like the burning bush..or even with human characteristics (like Christ), but I don't think any of that is His permanent state of being.