You say:
A maximum of 7 posts per day will be counted. This breaks the 4. no need to change posting habits.
Anyone who posts habitually more than 7 posts a day will have no issue if only 5 is counted. At the end of each week they will have over 35 posts that can be counted from. Only people affected are those that posts more than 7 occasionally.
Having PPP will be the biggest factor to help natural posting. You do not have a weekly threshold you have to reach and can be relaxed with whatever amount you can manage to put together for that week.
- Jay -