I can see that a lot of posts suggesting new rules for the campaign are coming from those who are not participants and want to join the campaign. The manager has been here for long time and I'm very certain he knows how to improve and get the best out of the campaign. Repeated suggestion of already considered ideas are not necessary. If he sees anything to work on. I'm sure he will do it. Repeated suggestion is also part of spamming
The forum is for free discussions so that if posts or suggestions are not off topic, they are safe from any reports and they won't be considered as spamming. You are still in the campaign so try your best to keep your position. Follow the guides and requirements of manager and make your best posts then if anything comes you won't regret (I should try better, don't regret this way).
I was in Bustadice before I joined BestChange and I got that bonus quite often often, and I admit it was a nice thing to see your name among those 4 that shared 100 USD (rule says up to 5 but in reality its always 4).
But as you said, BestChange has much bigger number of participants (58 compared to 16 in Bustadice), so it wouldn't be an easy thing to do, to choose few winners each week. It would take a lot of extra effort.
Having bonuses weekly for most merit earners will cause a headache for manager, obviously. If I am a manager, I won't go with the idea, especially like you said there are many participants in the campaign.
The earned merits itself can not reflect the truly quality of a poster, there are many bias factors that manager has to take into consideration - that is one of headache type. Another one is complaint from other top merit earners. It is something like an endless headache story.