I am not a modder but i love mods. These are some ides for mods

Gamer mod: Pokemon Grenades guns knifes Call of Duty MW3 special ops mode.

Hardern mod: Adds Diamond+ tools and armour diasidian Diasidian+ Platinum

Pro mod: Makes everything tiny bit harder to find so like larger deserts less dungeons less divine etc

Real life mod: Make you need water to adds realism to the game