May I ask what the main story hook would be, as well as what the characters are designed like?
You just did! The main story hook is in taking part of a civil conflict as civil war begins to break out across Hyrule with muddled morality and a lot of strange events cropping up-some posing very grim questions for the general populace's beliefs and understanding of myth and history. A lot of the pull is from mysterious regarding the truth of history and myth and dealing with the conflicts arising from different groups with different philosophies on force, the state and the proper role of each. A lot is initially in mysteries and unanswered questions and revealing much, specifically, of the main allure after that will be a spoiler.
As for the second part-what do you mean by, "What the characters are designed like", exactly? If you mean what sort of characters you will play... any character of not-too-high of a position or capability who has reason enough that they are already politically involved or at the tipping point to become so and have reason to be in Hyrule Castle City (as that is where it will begin, though not at all be restricted to) . The main available races will be Hyrulian, Kokiri, Goron, Zora, Korok, Rito, Gerudo, Sheikah, Twili, Boblin, Bokoblin, Moblin and Darknut.
For @Framing A Moose are you interested in any of these-or did you drop just to offer that?