Why is there no long hair or curly hair in game?

There's a cool short afro for male characters, but that's the only real curly hair option.

Here it is on my Trooper...
http://imgur.com/PK23T

There is not long hair or curly hair? Why is that? Medium length would be ok. A barber shop too.

I've made lots of hair for some mod friendly games and I will tell you, it's a pain in the butt. Even once you get the gravity to function properly with the whole thing you have the issue with clothing sizes. So long hair would need to be modified to be able to lay against the body in medium and light armor and to float above the body - on top of the armor - in heavy armor, and anything that has hair over the shoulders will need to be programmed to go over chest pieces/breasts in various types of armor.

Hair is a nightmare with clipping issues - and more than a few times I've completely thrown away an entire hair project because it was too much of a pita (or released it half-assed because people kept asking for it, but with a proper warning that it clipped like crazy or only had functional gravity from the shoulder up).

As for curly hair, if you want hair that is truly curly from a 3D perspective, you're going to kill many graphics cards OR the hair will look bad on low settings. To keep that from happening you can lay a curly texture on top of a flat mesh, and it looks kind of curly depending on the angle you look at it from, but it's not really curly - which would probably satisfy some people, but lead to complaints from others.

TL;DR, hair in video games is the freakin' devil and if everyone would just go bald already programmers would have an easier time getting content out. So go bald already! I'd rather have a whole new range of makeups and scars anyway.

But I have a book on the game and some of the concept art showed long hair. There is even a trooper avatar the red head who has long hair.

Concepts are easy. You just sit down and start sketching, or start modeling. Plenty of 3D compiled characters have long hair. The problems came in when those designs have to be able to move fluidly through jumps, twirls, somersaults, rolls, sitting, dancing, and so forth.

It's in the phase between concept and launch that things like long hair get excluded as not feasible.

Since beta I've always disliked the character creation system. It's extremely shallow and leaves no room for freedom and creativity.

there is not long hair or curly hair? Why is that? Medium length would be ok. A barber shop too.