4E comes out and enrages everyone with:
> It's clearly stated rules that are explained the same way every time they come up so you know it's the same mechanic handled the same way
> Revealing d20 systems mostly handle things with d20+modifier because the mechanics are no longer obfuscated like past editions
> Making sure all player options are valid choices and not trap choices included on purpose by the designers
> Daring to remove the alignment system that contradicts both itself and how DND settings work anyway someone is already typing an angry reply to this before checking this spoiler and leads to abuse from both players and DMs
> Not simply removing everyone but wizards from class selection just like 3.5 wizards wanted
> letting you have the freedom to determine how to flavor your ability (within reason)
> letting noncasters do more than I FULL ATTACK
> exposing which people literally cannot handle the mental burden of using imagination for abilities like Bloody Path
> not printing the pages with art that suggests you are opening an old cracked tome (like 3.5 did) to psychically bamboozle weaker minds in to thinking they are gaining some long lost arcane knowledge just by reading the rules

Did I forget anything? For all the whinging people did to force 4E out of existence, we got a more boring version of 3.5 with a genuinely weaker ruleset capable of less and doing it less coherently. I hope you all enjoyed 5E.