User blog comment:JordanaBrewsterFAN/Mass Effect 3 4th DLC./@comment-1786741-20130122002039/@comment-24174486-20130123195624

"So Shepard decides to take time off of his busy schedule of trying to save the galaxy to.... retake some kind of depleted miner base and some offhand Eeezo?"

The majority of ME3 has Shepard travelling across the galaxy gathering resources and people for the construction and defense of the Crucible. Liberating Omega ensures a major supply of Element Zero, further military manpower, and valuable intel on Cerberus—all of which will help the fight against the Reapers and Cerberus.