I was just thinking about examples of accidental throwaway ideas in Transformers that later became important plot points. For example:

In 'The Icarus Theory' (a Marvel UK comic story) it was mentioned that Swoop's name on Cybertron had been Divebomb. It is most likely that this was because Furman knew this was the originally-intended name for the Swoop toy, not because he was aware that the Predacons would be released (albeit - like Swoop himself - not in the UK.) Then, ninety-issues-and-one-and-a-half-years later, Furman uses this throwaway line to fuel two Dinobot-Predacon stories - "Grudge Match!" and "What's In A Name".

Mainly I'm wondering about ideas that prodigiously became important later on, not ones that were planned. Any thoughts?