no matter how you see it nasus need nerfs!!
A champion with infinite scaling that have almost no mana cost on this scaling ability and having tons of sustain its not balanced and on top of that a 90% slow every 4 seconds (max cdr) (Yeah its not 4 i dont recall the exact time now but you get the point)
Its kinda stupid because in order to win nasus top and to actually destroy him to the point the he wouldnt be able to even farm under the turret is like 2-3 champs and if you dont know how to play this champs then boom you need to have a jungler camp this lane while the enemy jungler snowball the rest lanes and the whole games become "stop nasus" no this is not balanced this need to be nerfed
Nasus back in the days was actually balanced when the Q mana costs was scaling to higher and higher every time you were putting a point on it and nasus was actually having to go back because he was going OOM fast and he was balanced because nasus players would need to choose to trade with E-W-Q or to just farm with Q in order to get some stacks more!
Nasus need some nerfs i dont know if that nerfs should be on his sustain or on his mana costs or str8 up on his Q losing stacks every time he die but sure as hell he need some nerfs!