In GZDoom, the language text file, which is used in mods for text messages has a flag called $ifgame which makes a message appear differently depending on the IWAD used. Chex Quest made use of this, but sadly it wasn't used for other games like Heretic, Hexen and Strife. Every equivalent cheat uses the messages from Doom regardless, despite them being different on the original DOS game. For example, in Heretic and Hexen, when you type "quicken" and "satan" for each game respectively, "Degreelessness mode on" shows up instead of "God mode on" used in the original game.
Putting the flag to good use, I was able to restore the messages that were different in the original games themselves. I also restored the quit voicelines used in the original Strife but absent in GZDoom and replaced with text versions of what were said in the voicelines themselves. Now you can enjoy a part of how the original games were meant to be and be called a loony for disabling god mode, just like in the good 'ol days!
Spoiler: Screenshots
Spoiler: Bonus stuff