One that doesn't require comp would be nice. Maybe have the title be called "Slayer." (Reference to halo too). Step 1. Require all weapon mastery triumphs completed (exclude pinnacle weapons). Step 2. Complete all "gametypes" triumphs under the mastery section (excluding comp exclusive modes). Step 3. Complete all class triumphs under the mastery section. I can't think of the other steps, but these 3 are a good start. Don't use the fireteam section under mastery as I want this one to be more for solo crucible players. Also, try to avoid pre-made team triumphs.
this would be awesome and could mix up loadouts seen in the crucible