I would like to see a sort of boss fight involving tainted guardians that revive eachother like the players do, ie: u need to either keep them away from already dead ones otherwise when they reach the tainted ghost u have like the same timer as it takes to Rez a player to knock them back or interupt them somehow or burst them down. IMO the lore that would be behind such bosses would be nice, like eris's old fireteam brought back to fight against the guardians in the same manner guardians fight. "Fight fire with fire"