[GAMEPLAY] - Nasus is too strong of a champion at the moment.
Aight so i know this isn't exactly a bug, however it is something that needs to be sorted in my opinion.
Synopsis: No matter what stage of the game Nasus is strong, be it early mid or late and that's something not many champions have. Early game his sustain from his passive will keep him farming merrily, mid game he's now tanky enough and has enough stacks of his Q to go offensive and has high kill pressure, and Late game well, you're basically screwed unless you funnel all of your cc into stopping him from getting close.
At this moment in time i don't there are many top lane champions that have what it takes to rival nasus in a 1v1. They'll build full tank and out sustain you due to his passive. If you're a Top lane tank and you're against Nasus then he can just stack his Q without much problem at all, all be it a little poke, then become an incredibly high damage threat mid/ late game. If you're a bruiser, then you've got a chance as generally your kit should help you out against him to stop him from stacking his Q so often and to provide a fair amount of pressure. And if you're a Full damage type Top Laner, then you don't have a chance either as again he will out damage and out sustain you with Q.
Balancing Changes: I think a way to balance him a bit more would be to either change his passive, or fixate the siphoning strike cooldown.
At the moment his passive 'soul eater' makes it so Nasus permanently has 10 / 15 / 20% bonus life steal depending on level, if this were lowered to 6/ 12/ 18% i think it'd be more balanced. Alternatively Siphoning Strike could receive a nerf locking the cooldown from: 8 / 7 / 6 / 5 / 4, to 7 seconds, this way his early/ mid game wont be as strong however his ult will still make it so he has a 3.5 second Q (not including cooldown reduction), which is more than enough to keep him as a threat.
Conclusion: I think that either of these changes would make him a more balanced top lane champion to go against, and lower his early game damage/ pressure and they're both fair changes too, however this is only my opinion what do you folks think?