Zanaris Explored

Vanilla+ I made for friends, just doing this to make it easier for them to update it

A bunch of new things to explore, load of new biomes, mobs, items, every dimension is packed with content

Fishing rework, roughly 75+ biomes added, around 90 or more mobs added, a lot optimization mods to keep it running great even at the 90 mod count ingame. Well balanced minecraft experience

BetterEnd for a large End rework, plenty of new blocks there ranging from foliage to slime, bricks and even colorful trees.

BetterNether for the same in the Nether, a lot of new dangerous areas, but the rewards are great since you get to explore and utilize many of the new items added.

Other important mods are Alex's mobs, Tide2, Stardew fishing, Storage mods to make collecting and sorting items easier than ever.

This mod fits really well for builders since there are compat support mods that allow all the different unique biome trees work with furniture and doors, allowing for a wide variety of builds, which also promotes exploration to find said new biomes. Each dimension has a LOT of new biomes, especially the overworld, ranging between basic ones that contain new blocks to extremely rare ones like the Origins and Rainbow Valley. 

There aren't crazy dungeons, but you're still rewarded for checking caves and chests around structures to find rare Artifacts which give massive buffs and change how you approach your game.