Replacing core functionality.

[Zix]

When I was messing around with my mod I tried to disable the core mod out of curiosity.
I saw the prompt which warned against this and realized that it suggested that a mod could replace the core functionality. I got curious and tried to reboot the game without Core just to see what it was like, but unfortunately the Core mod re-enabled itself.
I found out you can rename the Core mods file in the mods directory which will cause it to not be loaded, but the game opens to an infinite black screen.

So my actual question is; what would it take to make a mod which "replaces core functionality", considering without the core mod you do not even have a main menu. Is this even still possible? Or is the message just left over from a time when it was possible.

[AileTheAlien]

I'm curious now too...