User blog comment:James12708/Possibility of a Mass Effect 4/@comment-2250460-20121028163027/@comment-24174486-20121028231122

Your individual choices did matter throughout ME3. Your specific choices determined whether peace was possible between the geth and the quarians, how the genophage cure was handled, Conrad Verner's fate, and so on. Your specific choices impacted the sideplots that they were relevant to. But how would any of those specific things impact how the Crucible functions? Why would, say, the fate of the rachni have a specific impact on any of the final choices or how they played out?

With ME2, you're not restricted on what option you can choose for the Collector Base based on previous choices. While you get a better ending from making good decisions, you re not forced to choose a specific option from a moral standpoint in order to get a good ending. For example, you can get the best ending whether you destroy to keep the genophage data or whether or not Tali is exiled.