This mod widely expands the base game, adding new units, buildings, upgrades, leaders, and even custom mechanics!
Mod Progress: https://trello.com/b/zU1vW1bO/judgement-edition
Check out my Youtube channel for Modding Guides and other content! https://www.youtube.com/@ihalojuryi9642

Changelog:

--1.4.3
-Added Forerunner Healing Spire Base
-Added Promethean Watchers
-Added Didact and Knight Minimap Icons
-Added Minimap Icons for Forerunner Buildings That are Built Off of Minibases
-Slightly Buffed Crawler Damage
-Added Binary Turret
-Added Incineration Turret
-Added Splinter Turret
--1.5
-Added Flood Supply Stalk
-Added Flood Den
-Added Flood Lair
-Added Flood Nest
-Added Proto Gravemind
-Added Flood Tentacles (Turrets)
-Added Infection Forms
-Added Carrier Forms
-Added Thrasher Forms
-Added Swarms
-Added Bomber Forms
-Added Flood Spike Turret
-Added Flood Launcher
-Added Flood Juggernaut
-Added Flood Summoner
-Added Flood Walker
-Added Biomass Bombardment Leader Power
--1.5.1
-Fixed Thrashers Not Dying Properly
-Only Flood Combat Forms Can Garrison In Key Locations
-All Flood Units Can Now Teleport
-Flood Summoner Is Unselectable While Locked Down
-Flood Summoner Can Heal Units When Locked Down (Requires Upgrade)
-Flood Eggs Produced By Bombers And Summoners Are Now Not Selectable
--1.5.2
-Added Flood Combat Convert Leader Power
-Added Basic AI For Flood And Forerunners
--1.6
-Flood Survival Added
-Flood Launcher Damage Increased
-Flood Walker Damage Increased
--1.6.1
-Forerunner Survival Added
-Covenant Survival Added
-UNSC Survival Added
-Reduced Flood Launcher Range
--1.6.2
-Survival Gamemodes Now Work On All Maps
--1.7
-Added Master Chief Leader
-Added ODST Commando
-Added ODST Sniper
-Added Wasp
-Added Longsword
-Added Mantis
-Added Hyaena
-Added Coyote
-Added Rocket Hog
-Added Cluster Bomb Leader Power
--1.7.1
-ODST Commandos And Snipers Now Infectable
-Added Proper XF Textures To The Wasp, Mantis, And Coyote Turret (Textures Now Match Player Color)
-Increased Coyote Population Size From 1 to 2
-Changed Starting Base For Master Chief To A Station (Has 5 Building Slots Instead Of 7)
-Increased Veternacy Requirements For Mantis And Coyote
--1.7.2
-Nerfed Total Mantis Damage
-Nerfed Mantis Damage Vs. Air
-Mantises Now Count As Ground Vehicles (Banshees Now Use Fuel Rod Instead Of Plasma Cannon)
-Updated Announcer Lines For Upgrades For New Units
-Prevented Mantises From Harvesting Supplies
-Nerfed Mantis Shield (50%)
-Added Buzzard (Can Be Accessed From 2nd Page Of Airpad For Forge)
-Added Rhea (Can Be Accessed From 2nd Page Of Airpad For Forge)
-Buffed Longsword Super Missile/HAVOK Nuke Damage By 50%
-Buffed ODST Sniper Damage (Closer To Jackal Damage)
--1.7.3
-Buffed Buzzard Damage
-Removed Rhea (Too Buggy - May Return In The Future)
-Added Siege Pelican (Can Be Accessed From 2nd Page Of Airpad For Cutter)
-Added GroundVehicle Object Type To Gorgon And Raptor (Banshees Now Use Fuel Rods Against Them)
-Buffed Grizzlys (Cannister Shell Matches Scorpion Cannister Damage)
-Buffed Promethean Soldier Damage And Health
--1.7.4
-Fixed Siege Pelican Population (Actually Costs Population :))
-Added Broadsword (Can Be Accessed From 2nd Page Of Airpad For Anders)
-Added Falcon (Can Be Accessed From 2nd Page Of Airpad For Cutter)
-Added Covenant Engineer Population Type
-Added Super Repair (Accessible Via Field Armory)
--1.7.5
-Reduced Broadsword Boost to 1.5x (Down From 2x)
-Added Albatross (Can Be Accessed From 2nd Page Of Airpad For Anders)
--1.7.6
-Increased Phaeton Population To 5
-Removed Orange Smoke From Phaeton Helios Beam
-All New Unique UNSC Units Are Now Affected By Reserves Upgrade
-Landmine Drop Leader Power Added (Captain Cutter)
-Infantry Drop Leader Power Added (Captain Cutter)
-Crash Course Leader Power Added (Captain Cutter)
-Archer Missiles Leader Power Added (Sergeant Forge)
-Vehicle Drop Leader Power Added (Sergeant Forge)
-Titanium Plating Leader Power Added (Sergeant Forge)
-Scorpion Drop Leader Power Added (Sergeant Forge)
-Flash Bomb Leader Power Added (Professor Anders)
-Commando Drop Leader Power Added (Professor Anders)
-Flight Mechanics Leader Power Added (Professor Anders)
-Hornet Squadron Leader Power Added (Professor Anders)
-Napalm Strike Leader Power Added (Master Chief)
-ODST Drop Leader Power Added (Master Chief)
-ODST Enhancement Leader Power Added (Master Chief)
-Mantis Drop Leader Power Added (Master Chief)
--1.7.7
-Archer Missile Damage Increased By 25%
-Flash Bomb Damage Increased By 100%
-Napalm Strike Damage Increased By 20%
-Scorpion Drop Recharge Increased From 90 To 120 Seconds
-Hornet Squadron Recharge Increased From 90 To 120 Seconds
-Mantis Drop Recharge Increased From 90 To 120 Seconds
-Increased Hornet Squadron Cost To 900 (Was 600)
-Chief ODST Drop Cost Increased To 450 (Was 400)
-Chief ODST Drop Reduced To 3 ODST Commandos (Was 6)
-Changed Cutter's Infantry Drop To 3 Flamethrowers (Was 3 Flamers and 3 Marines)
-Added Hellion 
-Flood Transport Leader Power Added (Flood)
-Bio Heal Leader Power Added (Flood)
-Infectious Spike Leader Power Added (Flood)
-Infection Drop Leader Power Added (Flood)
-Regrowth Leader Power Added (Flood)
-Thrasher Drop Leader Power Added (Flood)
-Increased Longsword Pop To 9 (From 6)
-Increased Landmine Damage To 4x
-Landmine Cost Increased To 400 Supplies And 2 Tech (Was 200 Supplies And 1 Tech)
-Increased Flamethrower Turret Damage To 100 (Was 75.5)
--1.7.8
-Updated Infantry Drop Leader Power Description
-Increased Bio Heal Range To 20 (Was 12)
-Increased Flood Spike Damage To 8000 (Was 6000)
-Increased Flood Spike AOE Range To 40 (Was 30)
-Reduced Max Infectious Swarms From 20 To 10
-Reduced Max Infection Forms From 30 To 20
-Fixed Bug Where Longswords Would Be Stuck After Using Super Missile/HAVOK Nuke
-Fixed Bug Where Hellions Would Rapid Fire Their Infectious Bombs Infinitely
-Flood Transport Now Works With All Flood Ground Forces Except Flood Walker
-Reduced Didact Stun Time
-Forerunner Transport Leader Power Added (Forerunners)
-Hyper Heal Leader Power Added (Forerunners)
-Arc Tower Leader Power Added (Forerunners)
-Beam Barrage Leader Power Added (Forerunners)
-Soldier Drop Leader Power Added (Forerunners)
-Shield Enhancement Leader Power Added (Forerunners)
-Sentinel Drop Leader Power Added (Forerunners)
-Made Bio Heal Flood Eggs Targetable
-Prevented ODST Commando's Special Ability From Looping
-Increased Napalm Damage VS Buildings
-Reduced XP Awarded From Infection Forms/Infectious Forms To 0.25x
-Increased Flamethrower Turret Damage To 226.5 (Was 100)