Personally, I've never heard or seen the "Hexblade should have Warlock stuff" deal, but that's just me. I like this version better, you got rid of the EB, but I'm not feeling the free feat. Maybe stick fiendish resilience at 13 or the fast healing at 13, but the free feat just kinda seems like you did something for a dead level. And tell what level of invocation they'll get, least/lesser/greater/dark
thats exactly what I did, I was in a rush to go to work and just thru it on and pushed send! I agree its not needed and offers no flavor