Instead of creating entirely new SEP client installation packages for group assignment why not allow us to specify the Group ID on the commandline and have the installer modify the sylink.xml file at install time?
This way we'd only have to create packages for feature sets and would allow us to reuse the packages for many different installations. I know that this would save me several gigabytes of disk space on my main file repository as well as replicated across dozens of Altiris package servers.