Heh, I guess it depends which four corners. Are we interpreting in 2D or 3D, here? I mean, N,S,E & W is all possible, although the Qunaari will be fun to convert, while the dwarves are straight down. I guess the Chantry could just outwait them, they are clearly dying out.

Yes, the lack of an afterlife carrot is a tricky one for them to overcome.