Since
MetaDoom allows for making custom levels for the mod (There's even a text file in the PK3 named MAPMAKERS, so for anybody looking to create maps for Metadoom I'd heavily suggest reading it), I imagined a complete reimagining of all of Doom in MetaDoom's style. Doom 1 and 2, Final Doom, even No Rest for the Living!
I wanted the maps to make use of ZDoom's features to make them suitable for jumping and crouching and ACS to create advanced visual features such as certain doors like the small, metal doors opening like in Duke Nukem and/or the ones in Hell opening like doors in Hexen. Maybe also in secret Wolfenstein levels where the doors actually open like in the original game!
Ah, there's also a bunch of textures cut out from Doom
in this too so I'd suggest using textures from that and add them whereever they fit best.
Of course, all that isn't going to be simply easy. It's probably gonna take more than one person and also a lot of time to make a complete Doom reimagining for MetaDoom. And I'm not a mapmaker, nor do I have the skill to do it all. All the time it takes to do all that depends on skill and the amount of people, after all.