Great step, to be honest, I was thinking how much good it would be if bestchange would be following the campaign rules of Chipmixer where there's no minimum. Sometimes, it's hard to maintain 25 posts per week. For example, this week I had hard times posting each day since it was Eid-UL-Azha here and I was very busy. Anyway, I think from now, everyone will be able to put their best to generate good quality which will be benefitted for Bestchange eventually in both in term of promotion and cost I think.
There are some campaign who utilized bonus system.
Like this one on Bustadice:
This wouldn't be a good idea in my opinion. Some people may abuse merit system too if it's not properly taken care of. If I'm correct, there was stake signature campaign where there was bonus for good quality poster and at the end, it ended as a lot of abuse.