An interesting idea for a mod would be a mod where you could tame hostile mobs. There could be certain hostile mobs that maybe have a slight change to texture. When you find one, you can tame it with the nessesary taming item. For example, you could tame a Creeper with gunpowder, or a skeleton with bone meal. Or there could be a new item in the game which can tame the certain tameable hostile mobs. Like brains for the zombies , or bugs for the spiders . I think it would be an interesting addition to the game because it could be used for more than survival purposes!