Many people are frustrated by the newest update restricting the particle amount. People who spend months creating particle systems to show them off to their friends are considering quitting the game or downloading hacked clients. Also particle systems can generate lag even if you can't see them, and i have been crashed by another person using "crash particles" so that is not fixed. Toggling the particle emitters themselves should be an option, so that people who want to risk the lag to see something cool should be able to.