yeah im aware of that, im just proposing "new" categories in which same dmg type powersets can be, since we already have an cold, fire, darkness, sorcery, toxic and crushing dmg threat boost mods; so a slashing dmg can boost threat generation for those 4 powersets, like the ones we already have boost threat from different…
When the three perfection of body that roam around the top room of Teleios Ascendant lair follow you near the door of any of the four bosses, they can enter the room althought its a "closed" area.