Black Mage Idea - Meltdown
My idea for Black Mage is pretty simple. Reward the party simply for having them in your party and doing what they already do - melt faces.
Meltdown is a spell that's been around since FFVI, and it's come in many incarnations. For FFXIV, I'm thinking it can be a bit like the FFVIII version, but still maintaining its Fire aspect.
Meltdown - Level 62 Trait
Fire IV inflicts target with a stack of Meltdown. Meltdown stacks increase damage taken by 1%. All Meltdown stacks are lost when target is hit by Blizzard I, II, III, and IV and Freeze.
It plays on the idea that you're literally melting the targets defenses. This gives BLMs much needed utility, and most importantly offensive utility. Over a typical F4x6 Rotation, it'd be a 2.17% party damage increase.
It doesn't change the core of the job. It's not making them something BLM shouldn't be by adding a Raise. It just rewards them and their parties for doing what they already do.