One person on the forums managed to explain how his kit does make sense. I basically boiled down to;
His gameplay is more centered around objectives. which is more strategy focused. He does not participate in team fights until later in the game, which is a general type of thing to do(not put himself into danger until necessary) His q slowly powers up throughout the game, slowly becoming more and more hard hitting until it becomes a battering ram when used against turrets, hastening their demise. W is tied into his lore. His e(that is the giant circle, right?) reduces armor, which plays into his q's extra physical damage. It also allows him to choose the ground he fights on, when not used as a poke. It also gives the strategist feel, as only a poor strategist chooses to fight on ground he has a disadvantage on, especially when he can give himself the advantage anytime, anywhere. His ult seems to be just a tie in to Renekton's.
Note: This is a heavily paraphrased, garbled, and most likely a misinterpretation of the person's words, almost to the point of being incorrect, but it is the best I could do off the paltry memories that I have of his argument. It doesn't help that I don't play Nasus, but this person did. Hopefully it serves well enough. (If you want the original, it is somewhere in the Q&A) I'll see if I can find the original.
FOUND IT! Wow I was way off, but I guess it was my interpretation of it.
Seemed smartly tailored to nasus' playstyle to me. When you play nasus you don't concern yourself with dominating your lane opponent. You play the long game and are working to win by taking objectives and winning important late game fights. Nasus is his own win condition, that reflects how he's approaching the battle from a strategic big picture pov
Except for the first two sentences, the entire scratched out paragraph was my thoughts on it, apparently.
