I wouldn't mind expanding the Weapons of Sorrow and maybe a scout that shoots poison darts just like Thorn except instead of DoT (which at this point unless they buff or fix it Bungie should just remove all sources of this since it's currently broke all to hell) it drains some of your targets grenade and melee energy and adds it to your own but at some cost :lower armor, slows your speed down, etc: Or maybe really go crazy and a gun that leeches enemy life and adds it to your own but has an extremely low magazine so it isn't op af in pvp (or ban it from crucible)