And gatorade is just overpriced water with salt and sugar.

Bottle full of water, good pinch of salt, an oz or 2 of simple syrup. Tastes better than gatorade, and does the same thing. Really all gatorade does over water is give you salt. If you're paranoid...you can get some potassium chloride...which is just no sodium table salt for people on salt resitricted diets, to get some potassium in your system. But from the nutrient loss rates i've seen, sodium loss/hyponatremia is the only thing you really need to worry about.

Edit: i suppose if you're spending 15 hrs a day in full gear in the middle of a desert for weeks on end potassium loss might be an issue. But who knows, lol? I had hyponatremia once and it was not fun...so I do make sure to bring something besides just water on long, hot rides.