This modpack focuses on adding better, less empty biomes, more useful equipment to brave the new harsh enviroments, expanding on the tiny amount of bosses in vanilla minecraft, and more available playstyles:
Alex's Caves: Adds deep, rare, content-packed caves
Cosmetic Armor: Allows you to customize your look without sacrificing your survivability
Curios API: Allows you to equip special trinkets
Geophilic Reforged: Revamps most vanilla locations to add expansive biomes with many new items and structures to explore
Jade: Ever confused about what something is? this mod allows you to know exactly what your looking at and what is needed to collect it
JIE/JER: Shows you anything and everything you nned to know on the right of your inventory menu
L_Ender's Cataclysm: Adds massive structures with challenging bosses and great rewards.
Mowzie's Mobs: Adds rare structures with unique bosses and awesome equipment
ProjectE: Adds a new table that allows easily renewable resources
The Twilight Forest: Adds a new dimension with many biomes and bosses to explore, +fully fleshed out progression
Travellers Backpack: Adds upgradable backpacks to store more items for a nomadic playstyle
Waystones: Allows you to set teleport points that can be accesed from any other one for easy tranportation to explored areas
Xaero's Minimap/Worldmap: Adds a map with placable markers to remember where you've been
Hope you have fun!

