I don't think there's any way to make most helmets look good on them. But anyone who plays a beast race in this game accept that reality already. Even for Trolls and Elves a lot of helms look stupid because their tusks, ears and eyebrows often puncture through. Not to mention helmets often make a Dwarf's beard disappear and make Draenei bald. Helmets just suck in this game period.
And if the vulpera become playable they will be plagued by the same bad helmet head so many other races have. That is just the reality of WoW and one easily fixed by the hide helmet option. I personally do not see it as a big problem.
I'm really hoping in the next few builds we start seeing a bit more proof for Sethrak Allied race. There is a bit now but I'd like to see a female model and some gear starting to work on them. After seeing the Vulpera I have higher hopes for the female Sethrak because it looks like Blizzard is realizing animal races do not need to be drastically different between the genders. Male and female Vulpera look very similar and the female is not sexually exaggerated like the female Worgen was. Sethrak could follow this trend.
I did see someone on the forum say the Alliance has a reputation to gain with the Sethrak that the Horde do not. Can anyone confirm this?