A simple mod to add account management with /login and /register commands.
Metallics Arts Mod: Allomancy, Feruchemy and Hemalurgy, based on Brandon Sanderson's Mistborn series. In the universe of Cosmere.
A simple mod that implements the breaths mechanics based on Brandon Sanderson's book: Warbreaker
Nerf and modify the trades of the villagers, so that their best trades are not easily farmable.
Make the piglins and pillagers attack you directly. Who goes around with an unloaded crossbow? Any mob that uses a crossbow will just shoot you.
