Wild at Heart is a modpack focussing on gameplay expansion without removing the vanilla feel. It aims to make the world feel bigger, and more interesting to explore - while also making it feel more populated. Below are some of the key features of the pack which you can check out!

Various storage options have been added

Barrel/Chest/Shulker expansions
Storage drawers - store a lot of one item.
Simple Storage Network - connect all your chests and see their contents in one easy to use interface.
Upgradeable backpacks!

Gameplay expansion

Alex's Mobs - adds a ton of new mobs to the world, making it feel more alive.
Aquaculture 2 - adds a lot of fish to the game, and revamps the fishing system with an upgradeable rod.
Ars Nouveau
Deep Dark expansion
Pam's HarvestCraft 2 - additional crops, trees, as well as foods that can be made.
Biomes O' Plenty - lots more biomes & worldgen overhaul.
Seasons

Quality of Life

Compact cobblestone generators
Moveable chests etc.
Chunk loading
In-game minimap.
Lots of additional building blocks!
Helpful mouse tweaks.

And lots more!