I just realized that the warlock hexblade has warlock in some of its class features. Just do a find replace and you'll be good there.
Aura hexblade could you Sense Motive as a skill, it has the other social ones.
Aura of Unluck should say it affects attacks made against the hexblade, not on. Also, it feels like it should affect attack rolls and saves should be an extra choice but you've separated melee and ranged so I see why you did what you did. Honestly I think you can just remove the free save penalty given how quickly new penalties are gained.
The class needs an active ability. Not the one/day curse, something more than that. Right now it just walks around and gives people penalties.