Braum needs more

I think braum is a great champion but i think his ult needs to put 1 or 2 stacks of his passive on everyone it hit or slow them for a certain amount of time. This would make braum a better team fighter and make him more usefully. He only thing in team fights is to hit everyone once or twice then let others stun them. With this change it would make him able to apply the stack to everyone and then be able to focus more on his other teammates.