A mod of what i think a good end update would be mostly inspired from the echoing void dlc of minecraft dungeons, it adds stuff like new enderman variants four new biomes new structures new acheivments a new enderman to trade with etc.
you can give it fluoritee shards
chorus logs
platinum ingots
rhondite
obsidian
acid pearls
ender pearls
eyes of ender
chorus
rhondite block
discs
these all give different things
