I look at Dick Grayson's time as Robin going from 1,940 to 1,984 because it actually flowed over time and kept the origin & stories the same while his post-1,984 Robin stories I considers TDKR/James Bond/Grimdark Grounded/Multiversal Madness with multiple origins that contradict each other and cause confusion. This is why i liked the Morrison era because it went back to that and revived a character that became stagnant. The same thing happened with the new 52 retelling a different origin that got saved by a Morrison influenced Grayson series.
Outside of Grayson things:.
Superman acting like a Greek God and not a Man of Tomorrow.
The Green Lantern Corps having their hands in everything Cosmic. I was happy when the Vega systems was completely off limits to the GL Corps before the Orange Light retcon.
Destroying the heroes base - JL Tower, Hall of Justice, Titans Island etc.