I wish Nasus got his Q reworked already
I hate how this one ability makes or breaks the champ.
You didnt get lots of Q farm? You're useless.
You have 300 stacks? You're stronger mid game but shit late.
Somehow get farmed out of your mind and 1 shot everything? The game isn't fun to play vs you anymore as you got rewarded for ignoring champions to get to your 1 shots.
I'd change his Q by giving it the Sion treatment but a little different. Gain 2 stacks on last hits, 4 on last hitting with Q or killing a large creep/champion, 8 stacks if you last hit with Q on a champion or cannon minion.

you sure about the structure killer comment?