The other Advantage I see in stopping of @amr008 engagement program is that

There will be a high levels of Creativity in this community

People will want to earn more pob and the most valid way to earn pob is to create the most quality and unique content that will attract rewarders to reward your content highly.Your content must be more unique than others in order to receive an upvote.
Not only content but there will also want to participate in any contest post with a reward in this community which will make people want to stake thier pob in order for them to reward in contest.