You've been there before. You are in to a long ball on LOTR and wonder if that warning 5 mins ago was a double danger or a single.
Or, you can't remember if the tilt warning you got was on this ball or your last ball.
Why not have 3 LED's on the apron indicating how may warnings you currently have.
Also, why not create a small PCB kit that counts warnings so that you can add the traditional two tilt warnings on games that NEVER had it (Bally -17 and -35 games).
Or, make it so you can have 10+ tilt warnings to make the tilt tighter incorporated more into pinball than it was ever designed.