On the very next page, the survey mentions an offer which would give MAG players an extra character slot (presumably opening up the option to belong to more than one faction at a time) for a fee of $.99 per month. If this subscription plan is actually being considered, we don't know how popular it would be. We couldn't imagine cheating on our beloved PMC. (S.V.E.R. Forever!)
Zipper community manager Jeremy Dunham has addressed these potential changes on the MAG forums, stating, "we haven't announced any DLC details whatsoever. Nothing is official unless it comes from us." While these details may not be "official," it's worth noting that the survey was distributed by an official Sony email address. Food for thought!
[Thanks, Steve and Logan!]