The rise of the quickplay/ranked play matchmaking standard for FPSs.
I get that servers lists were more complicated, and the standardization of settings has its benefits, but the death of more persistent in game communities and the rise of matchmaking (especially SBMM) resulted in a system that feels less like something to do to pass time with friends and more like a grind to make your persistent numbers go up, and drop the game once you stop caring about those numbers. Ranked play becomes a stressfest 90% of the time with any matchmaking, and quick play is split between people treating it as ranked practice and getting mad at anyone not being just as serious, or people who see the name "quickplay" as a blessing to goof off and troll strangers.
I get that servers lists were more complicated, and the standardization of settings has its benefits, but the death of more persistent in game communities and the rise of matchmaking (especially SBMM) resulted in a system that feels less like something to do to pass time with friends and more like a grind to make your persistent numbers go up, and drop the game once you stop caring about those numbers. Ranked play becomes a stressfest 90% of the time with any matchmaking, and quick play is split between people treating it as ranked practice and getting mad at anyone not being just as serious, or people who see the name "quickplay" as a blessing to goof off and troll strangers.