The problem that I see with adding a penalty for dying in an Idle game is that you are idling... You aren't actually doing anything, so really all a penalty would do is slow down your idling. I suppose slowing it down isn't bad, but I don't see how it makes it better for a "hardcore" gamer to be penalized for dying in a game in which he has no actual control over it.
 "Quepland")
 "Honesty")
 "Skills Idle")
 "Idle Elite")
 "Motocross Challenge")
 "Armed with Wings 3")
 "Achievement Unlocked 2")
 "House Idle PRO")
 "Doodle God")
Thanks, planned!