I think its time for some more Shadowrun 5e fun. How about another quality?
Cost: 7 Karma
Whether a German Suplex, a cutting a Z into your opponents with your sword, or hitting all the five point of the exploding heart technique, you know how to get things done up close and personal.
You may take a minus -1 to the dice pool of a melee attack and declare you are using your signature move. You must describe your move to the GM. If you succeed on the attack, you deal an additional +5 net hits when the opponent makes the soak roll.