You can enter "anti bump rating" for each account. When an account is seen in the shitposting and in bumping the topics, it receives a mark, an analogy of the red trust and in the future posts of such accounts do not buimp topics, permanently or temporarily.
Someone will have to place that mark on account and once account(usually newbie) get it they will move to new account.
~
400(500,600...) characters + 10(20,30...) earned merits + OP is allowed to do daily bump.