My point about the .1 and .2 releases were that they're buggy, too. I look into my crystal ball and predict that 10.11.1 and 10.11.2 will both have serious issues (though not as much as 10.11.0. You really have to wait for the waves of bugfix releases after a point release to end before it's safe for human consumption.
Spotlight: Invisible files limitation; Processor usage and performance problems
DHCP Problems: AirPort networking dropouts, D-Link router problems, more
AirPort: No auto-reconnect after sleep; Connections dropping when switching from one base station to another Freezes during shutdown or startup, fixes
Widgets: Possible security exploit; Excessive memory usage; more
Check for bad login/startup items
CD/DVD burning problems: Errors, blank discs not recognized, more
Classic: Problems starting, more
Printer problems: Deleting, then re-adding
Font issues: "Fuzzy" type, more
SCSI Issues: Fix for Adaptec cards; Drives causing startup/shut down problems, more
Problems caused by QuickTime codecs
"Beeping" or "Chirping" noise back for some G5s
Bonjour issue and fix
Removable media devices not mounting, fixes
SMB connection problems, solutions
Wake-from-sleep issues
Speakable Items fails; workaround
Keychain import issue and fix
Safari 2.0: Problematic plug-ins, more
iPhoto 5.0.x: Unwanted image changes; Freezes on launch, fix
iSync 2.0: Deleted data; Problems synchronizing phones, iPods
Mail.app 2.0: Plug-in problems, removing bad bundles; Import problems; more
iChat AV 3.0: Performance issues
iTunes: Play does not continue during fast user switching, more
(...)
http://www.cnet.com/news/special-report-troubleshooting-mac-...