technically, it could accommodate more than one, but they would have to be set up to not use the same archetypes. for example, it wouldn't be too difficult to make a minimod that would bring the ADaoB hybrid shotgun fix to pure vanilla, and another one that would add the SCP shotgun hybrid muzzle flash, and set them up so they could be active at the same time.

but as I tend to say, we'll cross that bridge once we actually get to it.