You know what I think we need to see more lore blurbs about? The not-shit parts of the Imperium. They used to have those.
Like, the agri-world whose only exposure to war was that stray bit of Ork that landed like, 50 years ago, but the PDF corralled them without much incident. They've got plenty of fresh produce, towns and villages are reasonably sized, the taxes, quotas, and tithes haven't been onerous for generations, and then only in sector emergencies. They raise a Guard regiment every generation, alternating between men and women, who mostly go on to garrison planets that don't end up seeing a lot of action. Had a bit of excitement when a Rogue Trader stopped by a few seasons ago and Barry swears he saw an Eldar take off her helmet, but he also swears he has a girlfriend in Solusberg so you know how he is.
Stuff like that. Useful as balance
This is one of the reasons I love the Ciaphas Cain books.
Sure,
he's a galactically-famous commissar attached to some of the most competent regiments the guard's ever raised, who pals around with the Imperium's highest and most elite. But in
every major scrap he's been in, there's always been a Trooper Penlan, Felicia Tayber, Praetor Kolbe, or Zemelda Cleat right there in the shit with him, hopelessly over their heads but proving their worth against horrors capable of making
Astartes think twice about their life choices.
This is why the Guard's near-universally loved: they're just regular humans equipped with whatever the Munitorum can source from the least resource-strapped nearby forge worlds, who knuckle down, do what's told of them, and get the job done whatever the cost. Hell, the
lasgun of all things is more expensive, and harder to source and replace, than the guardsman carrying it.
Personal heroics of secondary characters notwithstanding, it
really drives home how the overwhelming majority of armed conflicts in the Imperium are fought by the PDF, Arbites, Frateris Militia, and AdMech, and larger or better-equipped forces are only brought in when shit's
already gone pear-shaped.
Brutal Kunnin' is a good book for that, too, considering a single secutor ends up having a bigger impact on the entire battle -- almost single-handedly saving the day -- than a Warlord, Reaver, and two Warhound titans
put together.