Random Bullshit Collectibles
Game mechanics pandering to “completionists” are the hate. Seriously. Riddle the world with shiny, blinking, singing McGuffins that some poor OCD gamers have to compulsively collect like a squirrel on speed is not good game design, it adds nothing meaningful to the game. There are good collectibles, but those are not random 500 flags of the assbutts scattered across all maps.
Either your collectibles reveal bits and pieces about the game world and the story, or they have meaningful mechanic consequences. If neither is the case, if each collectible is self serving bullshit to pander out the playing time, then please dear developer, do not include it. Games with great collectibles are Crackdown. Seriously, hunting orbs to ever so slightly boost your jumping power? That was awesome. Or The Last of Us, where each collectible tells a little story. Or somehow has an actual place in the world. Most anger points? Assassin’s Creed. So much bullshit to collect. Ugh.