The Proposed Constitutional Ban on "Gay Marriage" would have been a Constitutional Ammendment. I may be wrong on this point but I am under the impression that Ammendments only come from a Constitutional Convention when this takes place all bets are off as far as what will and won't be changed.
Also, I seriously think the US has become such a bitterly partisan place that re-thinking the rules our government is run by may be a VERY good idea. It would offer us all a new chance to re-construct our government with the consent of a super majority.
I have some ideas I will discuss later