90% paid bump/bot would reduce if this got implemented. Most of the ANN threads are bumped daily more than hundreds of time either through some users manually or with some bots. If 1 merit would required, the rate will significatly drop because most of the bots account get banned often.
Well, it would be more easy to say only Jr Member can post on altcoins thread. Newbies should be restricted, at least for avoiding the shady bump.