I've been derping around with Mystcraft for a week or two now, and I've got a pretty good hang of what should be disabled and what should not be.
I think I'd disable Nuclear-anything (Kabooms are bad.), and make Portal Guns not be found inside of chests.
Other than that, I can't think of anything that is destructive or intensive. Mystcraft age creation isn't much of a concern, I'm just fine for disc space. Soul Shards would have to be restricted, some how.
Other than that, can't think of a thing.
I think I'd disable Nuclear-anything (Kabooms are bad.), and make Portal Guns not be found inside of chests.
Other than that, I can't think of anything that is destructive or intensive. Mystcraft age creation isn't much of a concern, I'm just fine for disc space. Soul Shards would have to be restricted, some how.
Other than that, can't think of a thing.