To prevent the possibility of spamming, having a maximum count of 40 would be better than having 50. However, just because someone writes 50 or even more posts, that doesn't mean they are spamming and lack quality in their writing.
Spammers will spam even if it is just the regular 25 post needed weekly, I am not a member of the campaign
yet, but I believe that the top members of this campaign can meet up to the demand.
If anyone is found to be spamming, they should be removed to give room to others who can efficiently represent the project.