@Jarkes
The Shatter Glass had a narrative reason since Cliffjumper from the Classic Universe crossed over bots ran into at first are like “Aren’t you dead?”
And then in the Dungeons and Dinobots story which came out like a year before Transformers Prime started the had SG Zombie Cliff.
And then Unicron mini-series end of old IDW gotta show how serious things are.
So it does seem like there’s a trend of red shirting Cliffjumper.