They added the female night elves' eyelashes back in Legion...
But literally everything else they seem to be outright ignoring. When they were asked about the nelf eyelashes in particular, they said they didn't even notice they were missing, despite the hundreds of threads out there talking about the models' bugs (and that was one of the most talked about issues).
Another thing is they didn't add the new, completed hairstyles that they made for all the races. That makes me sad because some of them are neat. (Also they showed one for the fem nelf off in artcraft. :C )
But regardless, both worgen are buggy messes with practically static, poorly animated faces in part to their non-neutral expressions and lack of detailed facial bones (they have them, it's just nowhere NEAR the amount of bones the new models have). Both need to bring up to snuff. Despite being completed after the goblins, they actually manage to look leagues behind them.
IMO the art direction for the male worgen doesn't need to change. However, the female's does.