Return to ME:3

Now that Far Cry 3 is over and I am not quite ready to return to Assassin's Creed III, I think that I will finally dust off my Mass Effect 3 disc, purchase and download all available downloadable content for it and start a fresh new game. From what I have been hearing and reading- I missed out by not having the Leviathan and Prothean content my first time around. Do I have another 30+ hours to spare? Not really, but the world of Mass Effect is one that I will find any excuse to inhabit again.