Even the person who asked the question understood it after the first reply in a few words. It isn't that complex at all. If you remove everything that confuses a small minority of players you'll turn this game into the empty shell that is D3. It's not a good trend to start so early even before that game is released.

Also, not everybody needs to understand every single calculation in the game. If I don't understand some mod related to damage, I would just hover over the skill icon, check if my damage increases, and if yes, then cool, continue with slaying monsters.

And if it's so important to understand it, its a one google search away from doing it.