I'm a huge fan of the story, but allow me to be a little picky about the drawing. The style DOES come off as very manga-like - as a person who's really picky about the noses of the characters in particular, they all seem to be very generic and pointy. Well, Soldier's nose is a bit of an exception, which I can appreciate, but his head looks so off balance, somehow, I can't really appreciate it.
Also, Engineer. What happened there? His hand looks so small it's almost childish. There's something off about his face, too (other than the nose, which I already talked about) that's bothering me. He just comes off looking a lot younger than he should, somehow.
I'm also a little iffy about Scout's expression. Maybe I've seen too many bad doujinshi (ugh. low point in my life), but his face looks too stereotypical desu-boy, "Oh, Engineer-sama, I'm coming!!! ;o;" for my liking.
Like I said, there's a good chance I'm looking into that too much, but it'd still make me feel better if... Iunno, you gave him a bit more of a smirk so that he seems more like that boyish dickwad we all know and love, and not just some screaming, squirming uke.
NOW TO THE THINGS I ACTUALLY LIKE BECAUSE I ACTUALLY LIKE SOME THING WHOA, WHO WOULDA GUESSED
Scout's muscular structure. I don't know a damn thing about anatomy, though, so take this with a grain of salt.
The coloring. (self explanatory)
The dicks. (I also noticed that Scout's seems a little bigger! I don't know why that pleases me as much as it does.)
Solly and Scout's hands. (Engineer's was the only one I had much of a problem with.)
I'd really like it if Solly showed more skin, though. JUST A PERSONAL PREFERENCE.
Hope this helped.