Find different ways to defeat the queen and the king. Explore the space if you get bored of the overworld. Battle boss in space if you want. Also build a park with all the mob in the pack maybe not the boss. These are my favorite mods so far. PS. the first Soulis is still up it is broken at the monument will not be fix as this one is the newer one also yes the other Soulis modpack is mine just on a different account.

Ars Magica 2 (by AWildCanadianEh)
RadixCore (by WildBamaBoy)
Portal Gun (by ohaiiChun)
WAILA Blacklist (by SanityCh3ck)
BaublesHud (by GigaBit101)
BetterBedrockGen (by GigaBit101)
Open Modular Turrets (by Keridos)
Hardcore Wither (by thor12022)
Dense Ores (by Forge_User_06804776)
Moo Fluids (by TheRoBrit)
Falling Meteors Mod (by AlexDGr8r)
EnderCore (by tterrag1098)
Magical Crops: Core/Regrowth (by Mark719)
Draconic Evolution (by brandon3055)
FoxLib (by Kihira)
Chicken Chunk Patcher (by Chocohead)
Ender IO (by idontwantthisaccount4)
Buildcraft (by Covert_Jaguar)
Tails (by Kihira)
Ender Zoo (by idontwantthisaccount4)
GraveStone Mod (by henkelmax)
NotEnoughItems (by Chicken_Bones)
EnderTanks (by ShetiPhian)
CodeChickenCore (by Chicken_Bones)
NotEnoughResources (by way2muchnoise)
Additional-Buildcraft-Objects (by da3dsoul)
Talismans 2 (by GigaBit101)
Waila Harvestability (by squeek502)
Ender Book - Use XP to visit your waypoints (by Lothrazar)
Weather, Storms & Tornadoes (by Corosus)
Waila (by profmobius)
CoroUtil (by Corosus)
Extra Utilities (by Forge_User_06804776)
Advanced Generators (by bdew)
WAILA Plugins (by tterrag1098)
Brandon's Core (by brandon3055)
Mowzie's Mobs (by bobmowzie)
LLibrary (by _ForgeUser11902522)
Fossils and Archeology Revival (by _ForgeUser18449974)
littleMaidMobX (by KuroNeko87)
ProjectE (by SinKillerJ)
Draconic Evolution Patcher (by uvmidnight)
Tinkers Construct (by mDiyo)
Creeper Confetti (by SR2610)
Headcrumbs (by TurkeyDev)
Mantle (by mDiyo)
Minecraft Comes Alive (MCA) (by WildBamaBoy)
BdLib (by bdew)
NEIlootbags (by GigaBit101)
Blood Magic (by WayofTime)
Witchery (by _ForgeUser11995118)
Grimoire of Gaia (by Silentine_)
ShinColle (by lulanxd)
McJtyLib (by McJty)
Mob Statues (by Miyukiku)
Natura (by mDiyo)
Botania (by Vazkii)
Waila Inhibitors (by DarkhaxDev)
Big Reactors (by ErogenousBeef)
ArchitectureCraft (by gcewing)
Better Builder's Wands (by Portablejim)
AcademyCraft (by weathfold)
AnimationAPI (by shcott21)
Iron Backpacks (by gr8pefish)
Ranchable Fluid Cows (by JDLogic)
CoFH Core (by TeamCoFH)
LootBags (by Mina_the_Engineer)
Minefactory Reloaded (by skyboy026)
No Mob Spawning on Trees (by oldjunyi)
NetherOres (by skyboy026)
NEI Addons (by bdew)
Redstone Paste (by FyberOptic)
Ender IO Addons (by HenryLoenwind)
Waterhook (by HenryLoenwind)
Born in a Barn (by Speiger)
Mob Properties (by FatherToast)
LambdaLib (by weathfold)
Road Stuff (by Mapper)
NotEnoughIDs (by fewizz_)
DeathQuotes / Death Quotes (by lordcazsius)
Tinkers' Mechworks (by mDiyo)
Baubles (by Azanor13)
Iron Tanks (by SolderIO)
Academy Monster (by paindarx)
Ender Storage (by Chicken_Bones)
Iron Chests (by ProgWML6)
ChickenChunks (by Chicken_Bones)
WitherCrumbs (by TurkeyDev)
Translocators (by Chicken_Bones)
BetterFps (by Guichaguri)
Waila Events (by DarkhaxDev)
NotEnoughKeys (by dmodoomsirius)
Applied Energistics 2 (by AlgorithmX2)
iChunUtil (by ohaiiChun)
Deadly World (by FatherToast)
RFTools (by McJty)
ShetiPhianCore (by ShetiPhian)
Galaxy Space [Addon for GalactiCraft] (by BlesseNtumble)
also has a old mod BUT there are no version for it anymore so don't go trying to download the mod it is the ore one
and (ps you will have to install GalactiCraft maunly) https://wiki.micdoodle8.com/wiki/Galacticraft

Soulis Session 0 Remastered

Academy Monster

AcademyCraft

Additional-Buildcraft-Objects

Advanced Generators

AnimationAPI

Applied Energistics 2

ArchitectureCraft

Ars Magica 2

Baubles

BaublesHud

BdLib

Better Builder's Wands

BetterBedrockGen

BetterFps

Big Reactors

Blood Magic

Born in a Barn

Botania

Brandon's Core

Buildcraft