Even when talking about Squall and Rinoa, the character development was still incredibly bad; and this isn't just me being biased, I enjoyed playing the game, but from a text book standpoint it was just very bad. One of the most important things about character acting and narrative is that they should have the principle of empathy - something that is incredibly foggy throughout the whole game with all characters including Squall and Rinoa.
In other words, you clearly have no concept of character development.
In my opinion; maybe the weak personality filled with angst that Squall had appealed to me when I was 12 years old, but after growing up a bit I honestly feel he's a very childish character.