u/Normal-Finance-4719

How come the Imperial Fists in 30k get a lot more of the limelight than in 40k? It's something I've been wondering about for awhile. I've heard different reasons, ranging from yellow being a hard colour for beginners to paint to the Fists losing a lot of their identity to their successors (Sigismund, Rann, Pollux).

Curious if anyone knows why, I know the Ultramarines are the face of 40k but shouldn't the Fists be given a lot more attention?

Post-heresy how come the loyalist Mechanicum wasn't put under tighter oversight by the Imperium, in the way the Astartes were? Given the Martian Civil War and the Dark Mechanicum, the Adeptus Mechanicus seems to have a lot more influence than the SM Chapters do in terms of the day to day running of the Imperium. If having Astartes Legions was considered too much power for one man to wield, surely operating forge worlds and controlling the Imperium's technology is too much power as well?

Given the tensions between various Imperial factions in the lore, how does the Inquisition manage their equipment and machine spirits?

Do they use Mechanicus priests or do they have an alternative?