You're right that the scope of LinkedInTemplate is rather limited at the moment. There are so many possible operations to offer on the various social platforms that we had to start with just a handful. The LinkedInTemplate was one of the last additions to Spring Social just before M1, so it's the most limited of all.
I intend to add more operations to LinkedInTemplate and the other social templates. For your request, I've gone ahead and added an item in JIRA (https://jira.springframework.org/browse/SOCIAL-57). I encourage you to help us identify the enhancements to Spring Social that are most important to you by adding any additional items in Jira.
Spring Social Project Lead