I am not sure why people are mentioning repeating content; it appears obvious that it is another form of end-game content hence why it is linked to the new event on Illum, dailies from Section-X and the heroic space missions.
Trying to get us to go back to some of the other content that they created that people have gone away from recently. The only one that might be considered for credit from past completions is finishing the weekly in Section-X.