Nasus is a do or die champion
Its either u getting so fed with high stacks or u being useless all game , because of how flat shred works if he snowballs he is impossible to stop , if he is behind he is none existence.
thats said his damage gets none existence vs tanks as he needs to pop ult to do the most damage , it takes hella lot of time to kill a tank , while other juggernauts do it easier due to the synergy with blackcleaver.
so if they won't make an item that synergies with the doge why not make it in his kit , remove the e shred , give his Q BONUS ARMOR Pen maybe 30%ish so he is that real late game monster instead of the midgame powerspike nasus due to E shred.
rework his passive to heal him for each Q not damage dealt the heal will be waaaaay less against squishies and higher vs tanks as its a flat amount + stacks so he doesn't heal for 400hp per q at 20min and heal none vs tanks
Tldr: Weaker vs squishier targerts stronger vs tankier ones.