That's not the only common ground. The corporate elite in both parties are working in near total complicity on economic issues. The systematic transfer of wealth they are accomplishing from our pockets to the one percent goes hand in hand with the destruction of our civil rights, because it is our ability to fight back and defend ourselves against the looting that they are trying to curtail.
The wedge issues are really the only areas left in which the two corporate parties still disagree, and IMO that is by design. They can continue with what is important to them, the looting of our country, while we battle each other rather than standing up to stop them.
We have lost representation, and wedge issues are being used to keep us distracted from the economic complicity of the parties, while they strip us of our rights. If we allow this to continue, we will reach a point where they won't need to let us have the wedge issues anymore. They will simply impose rule. Democrats who care deeply about issues of equality and women's rights and equal marriage need to realize that fighting back against the corporate/economic takeover is JUST as important as standing up for the social issues themselves, because money is the root of power. We have to get the money out of politics, and the corporate shills out of our party, so that we can have real representation again.
Voting is not enough anymore when both parties are working for the economic agenda of the one percent. We also need to occupy.