I was thinking about how cool it would be to have these mods
1. A mod that added thirst and sleep levels to the game. I know there is a thirst mod but i want it so it doesn't add any new items and so there is a sleep bar that goes down until you sleep. This could be used in combination with another mod that makes mobs tougher for a hardcore game experience
2. A mod that allows you to capture hostile mobs so they lay spawn eggs and creatures hatched from spawn eggs would be friendly towards you and defend you but the parent you captured would still be hostile.
It would be amazing if these mods didn't add items so it wouldn't corrupt a world save upon updating.
Thanks for your time!