I have a strange feeling when it comes to those folks who weren't able to accommodate even 1 merit point after new system come to play, In my opinion they should be re-ranked somehow, because it's quite clear that if (for instance, the dude who becomes a full member by only shit-posting for 3 month period doesn't deserve to hold that high rank)

I know that's kinda hard task, but it can be done either by adding some requirement for obtaining "monthly merit point" (for instance 1 point for Junior 2 for Member 4 for Full and so on)  thus shitposters won't be able to get away that easy.