Reddit has really been emphasizing its social aspect lately, so I wouldn't be surprised if it introduced a Friends/Followers section and shifted towards a more personalized front page.
It has had it from near the beginning, and has been trying to promote the feature more over the last few months. You now get notified when you get new followers, at least. It is still very rudimentary, I agree that this will be an area of focus for them in the upcoming months/years.
