The Mass Effect Facebook Page has word that, contrary to previous indications, BioWare is actively looking at the negative backlash to the conclusion of Mass Effect 3 and the resolution of the Commander Shepard trilogy in the action/RPG series (which has apparently inspired FTC complaints). Here's word:

We are aware that there are concerns about a recent post from this account regarding the ending of the game. In this post it was stated that at this time we do not have plans to change the ending.

We would like to clarify that we are actively and seriously taking all player feedback into consideration and have ruled nothing out. At this time we are still collecting and considering your feedback and have not made a decision regarding requests to change the ending.

Your feedback and opinions are of the utmost importance to us. We apologize for any confusion this has caused. Our top priority regarding this discussion is to keep communication with you, our loyal fans, open and productive.