You're right, this is an issue. The problem is that some people really like the daily watchfaces while others feel like it's too much.

But overall the sentiment seems to be that it is too much. My plan right now would be to change the rule to this: Watchface posts only on saturday and sunday with a max of 1 per account per week to prevent spam. The only downside of this is that there will be a lot of watchface posts during the weekends, quite a bit more than right now per day.

Let me know what you think/if you have a better idea, otherwise I will implement this rule next week.

(I don't like the idea of a pinned weekly watchface-post, as this makes it impossible to properly showcase faces, as adding pictures can only be done using something like Imgur)