These champions are in dire needs of buffs
1. Nick Fury: Over the years there have been champions that can do what nick fury does in his second life phase, so i see less reason on why he should still lose 70% health. I believe his second life should be at 80%
2. Ghost: Phasing period should be increased from 2 seconds to 5 seconds. Heavy attacks should have a chance to get passive furies
3. Doctor Doom: Furies from sp3 should be capped at 4 instead of 2
4. Hercules: Immortality should be passive and prevent sp3 death
5. Namor: Chance to cause bleed from mediums should be reduced to 20%
6. Scorpion: Getting hit while charging heavy should trigger a passive falter to make him more playable.
These are my suggestions. You are free to disagree or share your opinions on what type of buff or rebalancing these champions need