This is probably autistic and dumb as fuck, but maybe it could be one of those "just for fun" things to think about.
If you had the time, skill, and knowledge nd were going to make your own classic Doom megawad, what kind of stuff would you incorporate?
Would you only use Doom or would you include the new creatures and weapons from Doom II?
Would you do the classic episode format of the first game or go for the continuous approach that Doom II did?
Any specific mods you'd include?
Assuming you decide to include mods, would you add any new stuff like the textures from Eviternity or some of the monsters and items on Realm 667's site?
Would you aim for a Total Conversion mod or keep it simple?