ZDoom

Zandronum has the ability to enable multiplayer spawns by simply putting the cvar 'multiplayer' to true. It'd be nice if multiplayer spawns for weapons/enemies could be enabled via a command similar to this. Simply enables the extra spawns is all.

"map map01 coop" does the same thing as typing "multiplayer" in Zandronum.

If you prefer not to enter multiplayer mode directly, then the things you want are already covered in this suggestion. (Please be aware, if you plan to tackle this yourself, that I have a refactor planned for the map spawning code to clean it up a bit and I will be removing the flag CVARs in order to add flexibility to the system)

Ah, I see. Though, your refactor would be preferred in a way. I don't plan on tackling it directly but if you want help, I could try something with you if desired.