God, that would be horrible. OOOs is clearly based on Buddhist ideas, a sudden parade of Christian ideas like Pride and Sloth that made no sense in light of the basic concept would be pretty bad. It would take the one really interesting thing OOOs has going for it ("let's base a Rider on Buddhist cosmology!") and flush it right down the toilet.
(Before you wonder what the Greeds have to do with Buddhist cosmology, I'm pretty sure they're supposed to represent how Buddhist demons tend to represent the degrees to which various desires debase and abuse humans. The use of medals is an oblique way of using coins to symbolize the physical form of greed.)