Darius should be able to ult allies.
And get a full reset if he kills his own allies. He also gets gold for killing and denies enemies of assist gold. It also adds to his killing sprees.
This mechanic will be so fun!!! Like over 9000 levels of fun!! Yeah of course your going to ult your ally who actually escaped with 1 hp left. So what? Its going to be hilarious. Not only will your allies need to run away from the enemy, they will also need to run away from darius!! This is going to be hilarious. Just imagine the bronze league plays of flash ulting an ally when hes escaped!! My goodness! Riot please, if you care at all about this game you must do this.