So far I had not got merits for my post from my campaign manager. But all members who are enrolled in signature campaigns have this advantage for sure. They have all their posts being read by a senior member here (who might be having good number of merits). There is definitely a strong possibility that he will give you a merit if you had made a very helpful post. Regarding giving merits to all applicants at the end of campaign, this will affect the forum. We will see a lot of new accounts applying in hope of getting those free merits.