similar to neutral but have concepts and beliefs of good, evil, neutral and corrupted.
What?
Excuse me, I don't think you understand what the ethic line means. By its very nature, it is a line with one end being pure good and the other perfect evil. Every alignment is along that line: good at one end, neutral in the middle, evil at another.
Your 'corrupted' ethic is a good idea, sort of. It is in between neutral and evil: basically evil, but not horrible like the Drengin or Korath.
You could have a 'benevolent' ethic, too: in between good and neutral. Not ALtarian, but quite nice on the whole.
You can't have 'a mix of everything'. Where's that on the line?--arguably neutral, which we already have.
The ethics system isn't a set of ethics, where you could combine evil warfare with good business practice, or perhaps be some awful whitecollar criminal but a pacifist. If it were so, then the Corporate would make sense.
But it isn't, and doesn't.