Hi folks. I also work for the Creative Suite and work with a large number of teams at Adobe. I'll try to cover open issues that remain on CS Live portions that have been discussed in this thread.

Disabling CS Live: As noted in other replies on this thread, the ability for CS Live services to access the internet directly can be disabled by using the AdobeOnlineDefault setting. This setting is documented in an Adobe KB article from CS4: http://kb2.adobe.com/cps/404/kb404813.html The CSXS preferences sections of that document can be ignored as the AdobeOnlineDefault setting was standardized as the setting for CS5.  Note that it does not prevent the browser, nor links that may be opened in a browser, from accessing the internet. What it does is disallow the services themselves from accessing the internet directly from within the application.

To Hudechrome, about not find the key in the registry and online help. The KB article documents creating the key if it does not exist. Regarding the function of Help, it does not completely disable Help. Help will still use files that were installed on your system. It just will not go out and search the internet for additional help.

Removing CS Live from the app bar: There isn't a CS-wide way of doing this. Photoshop did provide a preference to remove it from the app bar under Plug-Ins. The other apps do not have this. Depending on your needs though, the app bar can be hidden in each of the apps. Yes, standardizing on things like this across the Suite is something we can stand to do better.

Tim asked about removing some additional items from the installer:

Core:

AdobeCSXSInfrastructure2-mul

AdobeCSXSExtensions2-mul

Menu Items:

AdobeReviewPanel2-mul

AdobeStoryExtension-mul

BrowserLabCSLive-mul

SiteCatalystNetAverages1-mul

As Eric noted, most of the menu items should be safe to remove (AdobeStoryExtension-mul, BrowserLabCSLive-mul, and SiteCatalystNetAverages-mul). If you're not going to use CS Review, you can probably also remove AdobeReviewPanel2-mul, though it does have functionality within Photoshop. To re-iterate what Eric said, the products aren't extensively tested in such configurations so I think it's fair to caveat it with a "do so at your own risk."

Regarding the Core payloads, I don't really recommend removing AdobeCSXSInfrastructure2-mul. Although you may get away with removing it and not experiencing problems, it is a technology upon which some other features are built. For example, if you use Configurator panels or MiniBridge, they need the components that are installed by this payload.

I hope that covers the CS Live issues that appeared to still be open on this thread. I'll check back in case there are additional questions.