I would rather Mass Effect just end than have ti become an MMO. That is incredibly difficult for me to say, as I love the Mass Effect series more than just about anything, but to go MMO with a series this story driven would be a huge mistake. Yes, the galaxy is awesome and expansive. Yes, an MMO would allow for better exploration of that awesome, expansive galaxy, but I genuinely think that an MMO would be the death knell of a series I'd really like to see continue. I think that, in the wake of Shepard's victory/defeat, we should play a different person in Mass Effect 4. We should deal with a smaller scale, more personal conflict that doesn't threaten to ruin the whole universe, but only to screw up one planet, or, even better, one life. This would put a lot of perspective on the series, for me, anyway.