The latest patch introduced a funny change to the campaign window: All the levelling zones are now counted as quasi-campaigns and reward items of varying value for completion. Some of the low-level ones are pretty amazing for poor players: For example completing the Tower District now rewards a full set of green quality profession workers, one for each profession! Kind of makes me want to bang my head against the wall for all the hours and days I spent levelling up white quality ones... but it's a nice change for new players for sure.
I might even be tempted to go back and finish off the zone on my max-level alts that never completed it. I'm just not sure the campaign window was the right place for this addition, as it looks pretty cluttered now and makes it harder to keep track of your progress in the "real" campaigns.