Well There is many many many mods I can think of More ore like granite and bronze and copper and magnesium and potassium and fantasy ore so i can make more pickaxes and more armour and blocks and tools
.A few mods that can make common materials into obsidian so i can go to the nether.
Some stone pickaxe enhancers to mine bedrock and obsidian and all the mineable materials, So with stone it can act like a diamond pickaxe that can mine everything.
Tonnes and tonnes of tameable animal mobs.
More hostile mobs like Devils, Demons, Gremlins Goblins , and weak animals that can drop special loot which the player can use also, More Guns and bullets it can fire
more weapons like halebreds spears, pikes mountable wolves cars aircraft. more companion mods.