These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Nightmare Fuel: Rojer's Mrdinis are killed when a general demands that he teleport bombs onto a Hiver world, enough ordnance to wipe out everything on the planet. Horrified, Rojer refuses, only for the general to attempt to kill him. His Mrdinis take the hits- and are crushed.
Barchenka's saving ways, like giving her grunt workers only enough air for their shift, with nothing left over; dispensing with safety lines; giving them only short-range com units so if someone gets in trouble, all the workers can't hear them screaming for help; and worst of all, if a grunt accidentally ends up flying off into space, she'll only try to rescue them after the shift is overů if there's a ship available. And if they know where the grunt is.
Unfortunate Implications: An openly gay man is finally introduced to the series and in the very next book we see him in, he's banging his female best friend.