The one rewarding and fun weapon in the whole game is being used as a scapegoat for atrocious map design and half-assed design constructs on 343's part.
This I disagree with. I don't get that feeling when using the DMR. I rarely get DMR battles. It feels CoD like when I use it, and when I come against it. Battles normally go to the first shooter. Of course flinch and connection factor in, but that still doesn't remove the fact that I don't feel rewarded when I get kills with it. I feel like I'm taking the easy route. Also taking Reach into it, I never felt rewarded then either, without flinch factoring in.
Still though, there is no denying that map design, and the design of most things in multiplayer are less than optimal. People have complained about a number of things in this game. The DMR isn't a scapegoat however.