Jax's Passive Ult improvement suggestion

I am enjoying learning Jax as a free week champion this week, however I am sure that many people have already suggested that his passive on Grandmaster's Might should have a counter on it. The same way Aatrox has a mark for when his blood price/thirst will trigger or Sona has a counter for how many spells she has cast to get her passive.

Anyone agree?