You can post images of your personal customised HUD here. I'll start with mine:
I learned this setup from a YouTube video, and it creates a totally different play style. In the FIRST match I played with these, I got 8-4, with even two hip-fire kills. (The second match resulted in 1 kill and 9 deaths, so I changed it back.)
A disadvantage is that you can't walk while shooting, but in addition, switching to ADS and firing at the same time becomes possible. This is fine with SMGs, I got a kill before I knew that I hit someone.
But do not try to quickscope with it. You can try, but you won't get a kill.
This setup creates a tactical way of playing, with aiming down the sight at every corner. I recommend to try it, just to notice that a game can be played in many ways.