So with the Cadian Pylons down will the Necrons start working

No. They're irrelevant and npc now

>>54981819
The Necrons literally do not give a shit, Chaos means nothing to them now.

They'll help if Trazyn is bored and Cawl goes/is revealed to have gone heretek, which is like 80% certain at this point given all the implications that he is literally an AI.

>>54982022
It would be kind of cool to have more AIs talked about in the setting. One of my pet projects is to get into a 40k RPG game as an Iron Man pretending to be a Magos.

>>54981819
I don't even think the Newcrons know what pylons are.

>>54982022
I'm hoping GW is actually planning something other than "new models need a lore backing to exist" with cawl and the primadonnas.

I'm hoping cawl has already gone insane like you said and has implanted control devices in all of the new marines. Mars independence and a Tech-Heresy to rival Horus.