As much as I love the Mass Effect trilogy, I just finished a playthrough of the three games back-to-back that lasted about a month or two, and with some additional content installed (Lair of the Shadow Broker was pretty awesome). I was satisfied, and because of that, I feel like I'm done with Mass Effect for the year.
I'll start a new playthrough of all three games next year, and I will also download Omega too. It sounds like an awesome DLC, though. The chance to fight with Aria excites me.