[Cogforts, mobile bastions, who has been drawing on dreaming of them?]

Be interesting to see if they ever decided to expand the cog forts into a proper army, that or as an expansion to the ironweld faction. They’d probably use small cog forts (maybe scout towers) with rules like non flying kharadon  skyvessels presumably. 

[AoS 2 - Stormcast Eternals Discussion]

Has there been anything to show that we are getting vanilla lord arcanum choices with those mount options? If not then that's probably the reason you'd take them, just hoping that's not the case personally since I want a non hammers of sigmar taurleon. 

[The Rumour Thread]

Well. It only took the stormcast a single edition to go from pristine condition to “I’ve seen some shenanigans” condition. 

[Fanmade Lion Rangers Battletome]

Seems the lore they've given them doesn't actively contradict any of your stuff, if the faction focus is anything to go by, so keep up the awesome work I'd say. Considered any allegiance abilities, command traits or relics for them?