Just a little bit of something from wikipedia I found interesting, in thinking about the placement of characters in terms of the last supper (as mentioned above). Note, I am NOT AT ALL a religious scholar and know very little about the Bible. i just found this kinda neat and wanted to share.
Cullen is in the same position as Batholemew in the last supper painting: According to wikipedia
"He is described as initially being skeptical about the Messiah coming from Nazareth, saying: "Can anything good come out of Nazareth?" (sounds like something Cullen would say about a mage, no?),but nonetheless, follows Philip's (note, Leliana = Phillip in position around the table) invitation. Jesus immediately appraises him as "Here is a man in whom there is no deception."
Kinda neat...