I feel you there, I've been playing Zelda games for almost 15 years and this sort of thing still rustles my jimmies. I was hoping that a future HW game would cover the Imprisoning War, but AoC really put a wet blanket over that.
Nope, AoC was their chance and they blew it. BotW2 will no doubt have some new meat for the lore and backstories, but nothing that would be seen first-hand.