Is the relationship between "A" & "B" like a mountain peak (it goes up, up, up, then down, down, down) or is it like a series of smaller mountain, valley's and level terrain?
When displaying the relationship path (all the 'connections' between two profiles), it would be very nice to have the angle of the arrow change depending on whether it was an ancestor (pointing up slightly), a descendant (pointing down slightly), or "same level" (sibling or spouse - horizontal, as it is now).
Yes, it is purely a presentation refinement, but would make it visually obvious the "meandering" of the path of relationships without having to carefully interpret the words.