Twilight's cutie mark is now a crosshair. I hacked it on my currently installed OMGOT's vertical HUD for personal use, but decided that there's no harm in sharing ;)
If you type Crosshair 1 in the console then the game will also draw the original crosshair.
Type Crosshair 0 in the console to disable this function (look at the screenshots for the results)
I used the Dot Crosshair as a starting...