The problem I have with Wesley is that he is one-dimensional. The character does not have a dark side, which all real people possess. We see it in most of the other characters, even if it's in their own repression of it.
The only time we get a glimpse of an edge to Wesley is in Journey's End,
where Wesley gets a little irate at the Federation's treatment of Native American colonists (which is a ridiculous enough plot device). Although this something any human being with a sense of morality would abhor, this is the moment in Wesley's life when the Traveler decides that he is ready to transcend humanity?