In my opinion, you're being too picky.

: Yes.

In my opinion again, it's barely frat-guy-ish at all, let alone too much-- I do see myself getting tired of it quickly unless they change it up a lot, though, and it doesn't add anything.

: I'd like the Spartans to act like professionals, not football players.

By "professionals" I assume you mean "hardened soldiers". Given that multiplayer isn't canon (even if they keep giving canon explanations for it existing, these still aren't real battles) and can include all kinds of wacky things (which might be becoming canon, going by the descriptions of the ricochet armor in Halo 4), I think there's room for acting more loose.

: It's a reflex sight with an open frame. Looks futuristic, but it doesn't
: look like something the UNSC would field.

: I'd recommend beefing the thing up until it's fully enclosed and larger than
: the devices we have today. Paradoxically, that would make it look more in
: line with what the UNSC fields.

I agree, something about that gap really bothers me.

: Burst fire with such an extremely high rate of fire that it sounds like the
: gun is firing one shot instead of two or three. All bullets are fired
: before recoil can disrupt the shooter's aim, which means that the shots
: land in a tightly controlled pattern. They land right on top of each other
: at close ranges, defeating even the heaviest body armor.

: The problem is, such a BR would have even more overlap with the DMR, which is
: why I recommend dropping one of them entirely.

Interesting, I didn't notice that, but I was more paying attention to other things; that does sound like a problem for gameplay.