Execution Ultimate Indicator

As anyone who has ever played Garen or Darius, your execution ultimates are your best friends when it comes to finishing those pesky little Rivens that dare disrespect your presence in the top lane. However, these two Light and Dark warriors shed tears when they drive their blade into the ground or leap majestically into the air for their finishers only to find that they needed one more sneeze to secure the kill. Darius is especially important because of the chaining in fights, but it is still tragic on Garen nonetheless. If all executioners suffered this, there would be no question, but a certain someone is graciously given a nifty indicator as to when his meal is ready to be chowed down upon. This seems to be an injustice that brings another kind of tear to Garen's eyes. My question to Riot is "Why does Cho'Gath's execution ultimate get an indicator when the target is low enough when Darius and Garen do not?" This isn't the biggest of issues, but apparently since one of Riot's favorite words has been "consistency", I was hoping this issue would be addressed.