You do not get better drops for tanking in the play list. This is how it works. Every five strikes completed, either from rewards or drops, you may get a legendary engram. The very next game someone else is due, and the very next game after that, someone else is due. It is all predetermined, what you do in the strike has nothing to do whith what your rewards will be. Note on engrams: They will be what they will be the second you pick it up. Switching it to another character, will still result in the same reward. Killing every Lvl 26 enemy will raise your chances for engrams. Not only do you have a chance for the decoherent engrams to turn into legendary ones, you raise your Crypnerd Lvl and a chance at getting another legendary engram. This is what you need to do to raise your chances. Help your team to kill every Lvl 26 enemy. The faster you do this, the faster the strike is completed and you can go on to the next one. The ROC playlist is for farming engrams. Sitting there doing nothing, not only pisses your team mates off, you are just prolonging the mission. Generate orbs, kill evemies quick and try not to skip the undying mind. Lol.