[suggestion] Add a role

[VenKitsune]

"Ifirit does a lot of fire damage"

No he doesn't.

There are 4 types of damage in this Game.
Physical - Split in to resistances, Blunt, Slashing, Piercing...Though this isnt used any more really, and with good reason.
Magical.
"Darkness" - Basically Magical that goes through shields, usually for balance reasons and to prevent some mechanics from being cheesed.
"Ethereal" - Damage that does through resurrect immunity, tank immunity etc. Think Trial bosses big attack like Innocences attack after the add phase finishes. Designed this way to prevent exploits such as having someone die...then ressing them during the animation of a big attack and having them save the group from what would otherwise be a wipe.

There is no "Fire damage" or whatever, there hasnt been for almost a decade.

Speaking of which...This game has been out for a whole decade (6 years since ARR, but the base game code was made for 1.0). Adding a role now would require millions of dollars and thousands of hours to rebuild the game and its content to account for a new role. Why do you think no other MMO adds new roles? Even the most financially successful one, WoW? Read above.
No offense...But i'd suggest looking up the basics of game design before making any kind of suggestion on this scale.