>>32531672>should the story be structured ahead of time, and if so how far ahead? how much influence should streamThis is an interesting question. A lot of the best "loretubers" run into the problem of running out of story to tell at once they finished with their own arc. Basically their past and background are now known, they went through what is supposed to be their character growth and there's no mystery anymore.
This why I think the best way to do it is appropriately Ina's way. Some people might not even consider her like a loretuber but she's actually very good at lore integration.
She has a premise "I'm not a tako, I'm a human". Which plays on her character design and everyone can see that the statement is false. BUT we don't know the why and how of her situation.
Then how she integrates her lore is made to work on the long run. She hints at her past and put out lore heavy content only drop by drop. A few hints in her MV or during her outfit reveal, a special lore stream for april fools, etc. We don't have the full story but Ina is definitely still telling it.
So I think if you really want to be lore heavy and in the long run. You should plan the lore to last from your debut to your graduation and spinkle it in between your regular activities.
Alternatively you have another way that's way more ressource heavy. Ironmouse was initially telling her lore mainly through her outfits.