I thank god they put no bloatware/extra programs on the unit unlike every other computer company out there. As for the control center, why make another when they already have the mini control center built into the charms menu?
Ways to adjust brightness in one second, maybe 1.5 seconds if your slow
1) Click the power options Icon in your taskbar, Click "Adjust Screen Brightness", done
And an option for Modern tablet way:
Swipe from right of screen, touch settings, touch screen, done.
Quicker still for adjusting screen brightness I use Fn + Del to turn brightness up or Fn + Backspace to turn brightness down.