Go directly to site admin and skip the dashboard
This might be a small thing for most people, but I find it somewhat irritating to end up at the dashboard each time I want to go to the Site Administration. I click the Control Panel button, and the Dashboard appears, and I always click on Administration right away to go to the Site Administration.

Dashboard

Site Administration
Can I change this behavior? Of course you can, it's Community Server! 
All you have to do is open up your SiteUrls.config and find the following section:
| <!-- |
| // ControlPanel paths |
| // |
| --> |
| <url name="controlpanel" location = "controlpanel" path="default.aspx" /> |
Change the path="default.aspx" to path="setup.aspx". Then save and close the file, and 'touch' your web.config. Next time you click on the Control Panel button, it will take you directly to the Site Administration.
I never really did like the Dashboard, since I believe the Site Admin gives a better overview than what the Dashboard does.
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