I considered options that looked like the latest Ghost, but I find I just don't like that look. That costume looks too much like a literal ghost and that misses the point.
To me, the name Ghost has always referred to professional assassins. Ghost should be the kind of character who always fulfills a contract. The taciturn professional who rarely speaks, but when he does it is to say something badass. So I went with his early look, with only the cape being a nod to later looks.