Regarding consistency cards

Some months ago we heard the argument that consistency cards needed a nerf and several of them got a blow:

– Tuirseach Skimishers from 4 to 5p, Koral from 8 to 9p;

– Siege Master from 4 to 5p, Amphibious Assault from 13 to 14p;

Syndicate, Scoia'tael and Monsters have their 5p thinners too, with Cassino Bouncers being the worst of them and playing for less points.

Now, pretty much every of this kind of card play for less then its provision cost, with the exception of Renfri's Gang and Blightmakers + Mage Assassins.

Oneiromancy is another card that didn't get a proper nerf, it is played in almost every deck in the game, way more than Sunset Wanderers – that was nerfed to 13p.

My question is why a faction is allowed to have a astoundingly better set of thinning cards, when every other faction don't have it ? Blightmakers + Mage Assassins not only play for their provision cost, but are also flexible: you can play for poison, you can summon Mage Assassins by other means…

Oneiromancy, Renfri's Gang and Blightmaker + Mageassassin should get the same treatment.