I’m sure (and I hope for the Solo players) Blizzard will add more Items to the Emanate pool every Season now. But allowing ALL items at once would be unpredictable.
Just think about weapons:
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The weapon types that can be worn by followers are limited
Templar: Axe, Dagger, Mace, Spear, Sword
Enchantress: Axe, Dagger, Mace, Spear, Sword, 2H-Axe, 2H-Mace, Staff
Scoundrel: Bow, Crossbow
So depending on the weapon type you want to use you have to pick a specific follower. -
I tried to make a list with weapons of the weapon types that can be used by any follower and IMHO give a remarkable offensive, defensive or supportive bonus
Class indipendent:
Blood Brother, The Burning Axe of Sankis, Solanium, The Executioner, The Furnace, Hack, Envious Blade, Echoing Fury, Messerschmidt’s Reaver, Eun-jang-do, Ahavarion, Spear of Lycander, In-geom
Barbarian:
The Three Hundredth Spear, Arreat’s Law
Crusader:
Faithful Memory, Blade of Prophecy, Jace’s Hammer of Vigilance
Demonhunter:
Yang’s Recurve, Leonine Bow of Hashir, Odyssey’s End, Buriza-Do Kyanon, Manticore, Wojahnni Assaulter, Karlei’s Point, Lord Greenstone’s Fan, Sword of Ill Will
Necromancer:
Spear of Jairo
Wizard:
Wizardspike, Valthek’s Rebuke, The Grand Vizier, Deathwish, The Twisted Sword
As you can see classes like DH and Wiz then would have a huge advantage over classes like Barb or Necro just when it comes to weapons.
As a result all followers would need to be able to wear every weapon type, even the class specific ones like Hand-Crossbow, Wand, Scythe, Flail etc.
And also every offhand.
So then I don’t need 3 different followers anymore.
Every Patch we see that the balancing is not the topic Blizzard is best in. Emenating ALL items at once would make this even harder.