Yeah, kind of the TWD version of the ant/grasshopper relationship in A Bug's Life. We just haven't met the grasshoppers yet.
I also thought it was interesting that there are walker's with a "W" carved into them and in Alexandria people get stamped with an "A." Something definitely seems to be going on with the letters.
Now I'm wondering if the "Wolves" come to Alexandria every so often to claim the strongest members of the group to act as soldiers or warriors or something. That's why Alexandria always appears so weak to newcomers. It behooves the people of Alexandria to enlist new recruits to be claimed by the Wolves so that they don't start losing their own members who are very comfortable right where they are. Perhaps they send the videotapes (maybe via that girl who climbed the fence) to the Wolves so that the other group can review them and see if there's anyone they'd like to come and claim.
They did seem to really make a point to tell the audience that everyone raved about Rick on the videotapes.
Also the idiots who went out on a run with Glenn spoke of the four members they recently lost. Maybe those were "competent" warriors claimed by the Wolves. Also Aaron really wanted Daryl to replace his partner in going out on missions. Get other people to do the heavy lifting as quickly as possible because that's who are the Wolves are going to notice and want.
that girl is what kind of ties everything up, Im glad they decided to show her when she got out because it lets us think about all of this
she will most likely be the key to all of this