Since Nasus's abilities are amazing individually...
Why would you combine them all and create a champion with that kit?
12-24 lifesteal: Bloodline ramps up from 0% to 12% and it's considered late-game rune
Q: stacking auto-reset
W: oppressive point and click slow with ridiculously low cooldown late-game(lasts 5s, has 7s cooldown?????)
E: AOE magic damage that reduces resistances; max damage 440(+1.2 AP)
R: halves Q cooldown, free tank stats; burn %HP magic damage
I would propose these nerfs to actually make Nasus not brain-dead easy to play, rewarding people for nothing(sit back, last hit, poke while lifestealing back):
*reduce the lifesteal to normal values(let say 6-15%)
*6 or 9 stacks on large minions/monsters, 12 on champions only)
*slow has bigger cooldown, lasts only 4 secs, but reaches maximum slow value faster(after 2 secs)
*R: less burn damage, I literally built Thornmail-Tabi vs Nasus and his 500 stacks did less that the burn damage in like 10 secs of battle. make it 1.5/2.5/3.5%
Feel free to disagree, it won't change the fact Nasus has a high winrate and scales waaay too fast.
Lv.9 Nasus with 1 item and 150 stacks, glhf.