Honestly I don't like the story at all and I don't agree that you should need to do quests to unlock EVERYTHING in this game.
Like I can't do Odin on my alt because I can't unlock the quest. I've been backtracking to find the quest I'm missing but I just can't find it. The info i found on the internet tells me some prerequisite quests and I've done all of them or can't find them.

This is the problem with the quest gating, it's such a hassle just to unlock the one fight, which is a quest on its own. I don't understand why I need to complete a couple of level 48 quests to unlock it.

However, although I don't like the mainquest I can see why it gates some content.
I kind of wish there was a way to unlock things for all of your characters.
So say if I'm done with main quest on my main character, my 2 alts should have them unlocked too.

Because how do you, lore-wise, explain that all of my characters were the chosen one and they are all having the exact same conversation with everyone, they are all doing the same fights.
My main character killed ifrit, garuda and titan, why are they alive cause I made new characters? They all live in the same world