In XI, the idea of campain worked, cause ti was done during the war, so it was understanded that they'll fight for the controll of outposts and in XIV we'll be during "peace" time wich would make no sence. Now, if in the fute, 3-5 years from now, they wanna do an expantion where we go abck to fight during the war of the end of the 7th umbra era that would be awesome, go abck and fight in the cities and the camps, like the final days.
But going back to campain, i could see it been done for PvP, that at a sertain hour of the day have the free companies go in a free for all for the controll ofthe outpost, and at the end everyone gains XP depending on ttheir participation. And as a result the free company that gets more points will get the controll of the camp till the next event.