Quote Originally Posted by TraeSnow View Post
Now they give Astro the best mitigation ontop of giving them the healing potencies of a WHM WHILE also maintaining Astro lowered natural MP cost of healing spells.

The only unique healing class is Astro now. If Astro can main heal and buff group dps, why would you bring a WHM? They can only heal. They can't debuff enemies or buff allies.
Probably because WHM have some of the best sustained healing+mana recovery tools while AST has hot garbage for mana recovery (and can go OoM quickly) and their buffs are RNG-based, meaning they could do nothing beneficial for and entire raid encounter.