10 three of coins is equal to 14 strange coins. For some of us (such as myself) we have hundreds of these things and nothing else to use them for, so we might as well blow them on 3 of coins. The faction rep and EXP boost is gone. The nightfall used to be good regardless of your rewards because of the buff it granted. Without it, 99% of the time it isn't worth your time, which is why I don't complete it anymore.