Origins Adventure Pack

This pack uses IHasName's custom evolving origins datapack along with End Remastered, which requires players to explore the world to access the end dimension and many other structure mods such as Repurposed Structures and Structutory to incentivise exploration. After killing the Ender Dragon your Origin will evolve and you will become more powerful, leading to interesting power shifts in a multiplayer server. There are also mods such as the Create Mod and Apotheosis Which add quality of life changes as well as rewarding players who learn the mechanics and can make players very powerful. I highly recommend this modpack to SMP servers with friends as co-operation is key but you could also betray your friends to become more powerful and rule the server.