Why Would you do this? To get a glimpse of the webs future 4-6 months from now.And of course developers need as much advance notice as possible so they can learn adapt their code and style, and test against their existing technologies compensating for deprecated tags, etc. You can install multiple copies 'side by side' meaning you can run simultaneously a stable channel with all your settings and bookmarks, naturally backed up on occasion, and then a beta or bleeding edge hot off the presses edition and max out the performance switches. You can launch experimenting with your own combinations to customize your experience, and if it doesn't work out relaunch with a different combination.

for everybody rather they are set for maximum compatibility a bit like driving the speed limit or even under it.

While the defaults are thought out to be appropriate for most they are hardly ideal and can often result in apps in the web store that do nothing more than toggle these settings, occasionally you can even have flags and default settings depending on your version that makes extensions non-functional, and uninstallable so getting familiar with taking the rains is a good idea. Chromium Command Line Switches: a comprehensive listing

Open google chrome on startup