The R Core Team has included a lot of new members to its team. A lot of those members are mentioned in this article as positive to the community.

http://blog.revolutionanalytics.com/2014/09/new-members-for-...

Community building is something new to R in my experience. I would give it a little more time. I would also like to reiterate one of the strongest tenets of free software is that it is only as big as what YOU put into it.