He is not good right now the good top laners right now are lane bullies/carries (darius kennen etc) which he struggles against and he cant stack against them he could get a buff to his ultimate where it scales off health maybe or his base attack damage could be a bit higher so sheen items are better with him but give him a buff please.
Swiftstrike42 votesNasus does need minor buffs to be back in the 50% win rate category. But I don't think he needs changes to his ultimate or the health he gets from it.
Any significant buffs will overtune Nasus to probably being a bit too strong. I think his most of his kit is fine, except I think spirit fire should cost less mana.
I think just soft nerfs hit him hard, along with the other juggernauts.
His health scaling should be raised and his stack count should either increase his mobility or tenacity.
I would even take something minor, like a buff to his base health and base movement speed.
dominusx1 votesi always wanted for his W to steal movement instead of just slowing helping him not get kited. + a little extra hp on his Ult wouldnt hurt. OR increased lifesteal inside his E .
YSeT9iEzJK1 votesWelcome Nasus, to the forgotten champion corner !
fucking riot clown shoe wearing goofs.
BoilTheOil1 voteswhy is this getting downvoted
Swiftstrike41 voteswhy is this getting downvoted
Also, a lot of low Elo players think Nasus is too strong due to his infinite scaling. But the reality is most of those players have no idea how to fight Nasus, how to close out games, or think he is boring to lane against due to his passivity early.
Ravenous Howls1 votesYou are probably getting downvoted because your post is really a complaint with very little explanation of why a buff would be relevant other than stating he can't stack vs Kennen or Darius (which is completely untrue it's just more difficult).
I am a Nasus main and I've posted and responded many times clearly and concisely why power needs to be shifted in his kit and why he does need a smallish kit tune up to make him more functional in the current meta. I say this only b/c my arguments and discussion are well thought out and not ambiguously stated or predicated on just a few tough lane match ups.
All that said I agree with you. He does need some love but not for the reasons you stated.
agbudar1 votestry lane against 
with nassus
holy hell that was... painfull. really shows you cant be first pick toplane these days