I would like "Killer" traits return

[Shurrikhan]

The very short answer is gimmick. Like 2hr.

I guess this may just be a difference in personal preference between us then. When something's added, I like for it to be more than a gimmick. I want it to come into consideration when I consider the purpose, capabilities, and dynamics of my build (class, job, gear, materia, these traits, etc.). If it doesn't come to the point where I can say "I am... <some new or newly nuanced identity of the more general role>", I really don't care for some random shiny thing going off occasionally outside of my control.

[Gormogon]

I guess this may just be a difference in personal preference between us then. When something's added, I like for it to be more than a gimmick. I want it to come into consideration when I consider the purpose, capabilities, and dynamics of my build (class, job, gear, materia, these traits, etc.). If it doesn't come to the point where I can say "I am... <some new or newly nuanced identity of the more general role>", I really don't care for some random shiny thing going off occasionally outside of my control.

The reason it's not gonna be worth making it a full fledged part of the combat design is that it will become a thing is that is gonna become a dependency for end game content, even if it's a low 1 through 3 percent increase or a 5 percent proc rate, and it becomes a hassle to develop with it in mind and a headache because of it. Developers always bring it up and end up removing it in the end overall to allow for more diversity and remove that dependency. Sadly the worst part is that the community can't be trusted with it.

This makes such an option very limited so that it doesn't impact the game drastically and prevents such a dependency.

As a gimmick by making it be a very low proc rate that in the off chance that it does activate then you can enjoy it going off because you chose that trait to define you. In which is more of an open world quality of life thing. Especially since you'll be more inclined to be diverse with all your jobs unless you want to force the same trait into every one of your jobs.