So, in case you haven't noticed, Buddhist and/or Hindu thought is actually based on some of the exact same ideas as Christianity.
1) "God" is everywhere--inside us, outside us, around us.
2) "God" sustains life.
3) The ultimate goal is to unite with "God."
And those are just a few off the top of my head.
Doesn't that suggest a common deity in some way? If Eastern religions--on the surface appearing so opposite to Western ones--are actually based on some of the same fundamental ideas, isn't that more of a case for a single common deity, being expressed through different avenues and particulars?
In turn, doesn't that help make a really, really good case for religious tolerance and freedom of worship? Perhaps even...pluralism?