All a lot of good suggestions adde so far! Here's my personal list:

- More facial hair options and ideally separate them from the "facial features" tab like hairstyles. Most of the male characters only have access to some sideburns and maybe a goatee at best and just some scruffy 5 o'clock shadow at worst. Some don't even get any at all.
- Textured hairstyles. I'm not someone who personally uses black hairstyles, but it's super important to a lot of people I know and more diversity in hairstyles is never a bad thing. Just... don't pull a hairstyle contest and flatten the crap out of it.
- Body types, or scale sliders for more body parts/limbs. If new body types entirely aren't feasible, then at least give us the option to thicken or lengthen our existing limbs and body parts. Let me play a dad-bod Miqo'te.
- Options for body tattoos / paint. Give me the option to put an Archon tattoo on my neck!
- Au Ra Scale Colors/Patterns! Going hand in hand with the previous point, give Au Ra the option to change the way their scales look on their bodies! Additionally, more color options for Au Ra scales, and possibly even some "overlay" patterns, like sparkling or iridescent scales!

I wholeheartedly support this initiative, and like others have said before - if we're not getting any new races, then it's high time that the existing character creator got an overhaul.