Besides being responsible for the end of the previous war that made the main cast orphans, capturing Adel who is vital to Ultimecia's plan, her cell causing the entire Dollet mission to even happen, and the events of their story is ultimately what allows the party to learn who Ultimecia is because of tracing it back to Ellone who was trying to change history from them. Not to mention Seifer's character development is actually based on that silly movie Laguna made. I can go on here as well.
Neither is most of the FFIV cast but you counted them in that poll. As well as Galuf in the FFV one.Because they're not at the end?
I'd argue no one but Squall, Rinoa, and Laguna get any development in the plot.Because of the three, only Laguna gets any real development?