I think Frank has said before if he were to do Neo now it'd be a lot different and maybe a bit more 'classic.' But he keeps it up as a pet project and for the people that grew up with it, so some design ideas have to remain consistent. Looking at the very first design you can see how much his skill has improved. He gets a lot of personality out of non-human characters and always has a nice sense of movement for things.
Exterminate all rational thought.