Spectating End Game notification!!

Hello Riot staff, I have come across this many times in the past and wondering if this could be a possibility added to the game. When I am spectating a match, it is clearly behind the actual in real time to prevent cheating.

This is good, however; when the game is already finished, I am still spectating a friend's match, and they start a new game immediately after they finish. What i feel should be implemented is a Large Notification that comes up on screen to inform spectators that the Game Ended or something, so i can stop spectating just in time to join my friend in a new game.

I'm sure many have come across this and would appreciate this. Thank you for your time!