Your mistake is seeing the Emperor's most faithful as military hardware and zealots...
After seeing the phenomenal work 343 Industries has done with Halo 4, I couldn't help but wish Games Workshop tried harder to make their own super soldiers seem like the best/worst mankind had to offer in almost every way to the normal dudes instead of just crazy religious assholes with big guns and chainsaws. I don't mean make them heroic or some dumb shit like that, but just really push what it means to be a Space Marine or a member of another highly regarded/well known group in the eyes of a normal human who may or may not think highly of them. Some may think of them as heroes based of things they've seen or heard, some otherwise because of course a lot of the SMs and Sisters really are crazy religious assholes who pretty much are inhuman. The point is I'd like to see more dialogue from the normal people in the 40K universe about the universe's most iconic figures and what they feel, despite whether they're wrong or right. For the love of god, don't take any of this as me saying I want 40K to not be grimdark because that's definitely not the case.
Seriously, how amazing would it be to see something like this with a Warhammer 40k twist? [link]
I think a good example of what your looking for regarding Guardsmens personal opinions to Space Marines is in Dann Abnetts Tanith series in the latest novel so far, Blood Pact in which three Space Marines from three different Chapters head up a Space Station assault with the Tanith 1st and Only. If my memory serves correctly because it has been over a year since I read the novel, the Space Marine Chapters were Imperial Fist, Dark Angel, and Iron Hand (I could be completely wrong about this, again its been over a year) The Guardsmen of course glorified the Imperial Fist because out of the three, he was the most human yet everyone recognized in the end, that their life is forfeit to the Emperor and the greatest duty is to lay down ones life to protect the Imperium of Man- Ave Imperator
There is a rather brief moment of that in the mediocre game "Fire Warrior" A guardsman and his superior are torturing another Fire Warrior and the conversation somehow moves that way for all of about 2 sentences.
Guardsman: Damned Astartes! think they're so much better than us!
Officer: They are! And don't let the colonel hear you talk like that!
Or something to that effect, but that's about all you hear of that. But it sounds like your looking for a bit more than one brief heated exchange.
Thank you, I personally enjoyed every novel but that last one had to be the worst because instead of losing one or two characters you love, you had whole squads disappear in that hell hole
They tend to do that, but a lot of writing for 40k is outright, well...it's not good, to say the least. Not all Sisters of Battle or Space Marines are utter assholes through and through, and there's some who are actually nice guys (see the Salamanders, Chapter Master Pedro Kantor or Titus), but rarely is this depicted in the games (with the obvious exception of Titus) or within the novels.
Guardsman: Damned Astartes! think they're so much better than us!
Officer: They are! And don't let the colonel hear you talk like that!
Or something to that effect, but that's about all you hear of that. But it sounds like your looking for a bit more than one brief heated exchange.
(I'm really sorry if you knew all this already.)