For many in Unionism, the Good Friday Agreement involved significantly more compromise for Unionists than it did for Nationalists, not least because for them, concessions usually meant giving something up they already had and for Nationalists it meant giving up on things they only aspired to have. This feeling has never really gone away and many still feel that it is just one concession after another with nothing coming the other way.
Those on the Nationalist side will argue, with some justification, that it was about achieving a balance where Nationalists had, at the least, a proportional say in running the country and that perceived and real injustices were corrected.
Now though, as things stand, any argument for further concessions boil down almost solely to ideology rather than injustice. The Northern Ireland of today is largely a fair and just state. Discrimination based on faith is not just outlawed, but abhorred by the majority of it's people. We have completely free and fair elections. Our Police force is supported wholeheartedly across the community as is our Justice Department.
For Unionists, this means that they can fight their ideological corner free from the shackles of the past.
Sinn Fein have for years campaigned as a party dedicated to the reunification of Ireland as a republic but their strength always came from their drive to fight injustices for a community that felt it was treated as second class. Now that that is no longer the case Sinn Fein have to put the case for a United Ireland not as a moral issue, as it has been in the past, but as the correct ideology. For Unionists, this is good news. Sinn Fein raised the issue of Unification again in their manifesto and Unionists should not be afraid to take them to task on it.
It will be interesting to see what Sinn Fein do when Unionism finally turns around and says: no more.