Not all ideas are worth sharing, sometimes they're even horrible... But there's never a bad idea, and as you'll see much of what was scrapped found its way into other aspects of the concepts I shared. This page is largely still a work in progress, but there is some information.
This list is titles only. The information for these scrapped ideas was often never written down and has been lost to time. If the concept is of greater importance or has deeper roots then it will be featured below.
Scrapped due to Dark Ages adopting similar ideas:
Doom Eternal - Night Sentinel DLC (2022)
Doom Eternal - Prequel DLC (2022)
Doom Eternal - The Betrayer DLC (2022)
Doom Eternal - Argent Shield (2022)
Doom Eternal - Argent Fist (2022)
Doom Eternal - Parry System (2021)
Doom Eternal - Armoured Hell-Knight (2023) - (Also scrapped for Knight-Mare Demon from Nightmare Demons concept)
Scrapped for redundancies or no longer believing to be worth sharing:
Doom Eternal - Corrupted Doom Marines (2023)
Doom Eternal - Underwater Combat (2023)
Doom Eternal - Immorian Guards, Knights and Drones (2021) - (Briefly revisited in Immora Reimagined concept)
Doom Eternal - Snap Maps Return (2021)
Doom Eternal - Cyber Harvester (2022)
Doom Eternal - Acid Demons (2022)
Doom Eternal - Dark Lord End of Stage Battles in The Ancient Gods Part 2 (2021) - (Scrapped in favour for a simplified version in Dark Lord Reawoken concept)