Sup, func_. I worked with one of the guys at doomworld to make some plutonia themed 1024 maps, Each of them Boom compatible.
How this worked was that each mapper had to make a playable area of the map within a 1024 grid confinement, utilize higher tier monsters (I.E. Mancubi, Revenants, Arch-Viles, and Chaingunners.),and then submit their map and wait for it to be reviewed, If reviewed, the mappers would respond to feedback and improve the map until it is given the OK.
Also, keep in mind that Zandronun, ZDoom, or PRBoom + is recommended to play this wad.