I actually _like it_ -- even though my lots suck.
Here it is in a nutshell... When you tag up for Campaign, you can then make an additional call to the C.A. to have him or her put you into one of five Unions.
If you get approximately, by my read, about 400-500 or more XP, you can lot for various "spoils" -- mostly crafting items, but there is the occasional single Dynamis currency (and I have gotten one already!), as well as the occasional medicine.
I actually do like this. I think it's a solid way to get people into the fight.
There is one problem though: They really need to address what, essentially, are null fights -- offensive fights against no opponents, with the Fortification nerf making it worthless to hang around.
(Worse, about the ones where the Beastmen flee and the fight continues as a Fortification-fest...)