I'll preface what I say, by stating that SE has gotten a lot of things right with customization. Namely, there are some pretty unique things you can do with housing, provided you can afford it. The aesthetician and dye systems are also very nice touches, as well as the upcoming glamour system.

As you may have picked up on however, there are issues with housing and the dye systems that have been talked to death here and elsewhere, and they aren't even the most important in terms of what players should be able to customize.

Here is a list of things that need to be changed for the good of the game, in my opinion.

1. Traits

These are all just handed to us. They might as well just apply when we equip a job. Why do they have their own menu? If we can't change traits or pick them then this seems a waste of space. I think we should be able to pick from a variety of traits similar to WoW's talent system.