Considering that Arrival is still aeons better than that abortion, Pinnacle Station, and the overall quality difference between, say, DAO and ME2 DLC, and I share this sentiment. I cut ME2 a lot of slack due to its role as a 2nd part in a trilogy, which means that ME3 has to be awesome.
Are you aware of the specifics of how a DLC is produced as well as what teams are involved?