As of the recent update at the time of posting this the items sets such as the "tank buster" and the "gas jockey's gear" sets along with others made via the polcount update in tf2 has been striped of there effects and some have been transferred into the other items of that class in one way shape or form such as the charging targe getting after burn immunity.but with this the shat Aran spy's near inaudible de loam is gone so the dead ringer is getting a another nerf along with it's already big nerf.in place of the bonus the sets leave behind a sort of calling card where a little tombstone with the weapon is placed on the corpse as it falls down dead or with the full set particles appear overall creating cosmetic effects.what'll happen next who knows.