User blog comment:LilyheartsLightning/Citadel and Reckoning DLC announced/@comment-1786741-20130221185148/@comment-1786741-20130221193541

What holes? Overlord was a completely new addition. The only dlc that had any sort of connection to the main game was Lair of the Shadow Broker but it added so much that I didn't really care all that much. Everything else was new content.