The current character creator (HoloMe) is good for the face and head, even though it lacks a few things hair and face-wise (more facial hair choices, bi-coloured that can also be used for ageing).
What I want, and is a good place to start, is a more detailed character creator that includes height, and basic body shapes (from super skinny, to large, to body-builder large). I mean I really would like a character creator that includes advanced sizing in chest, arms, legs, and midsection (as many MMO's do). Additionally, different Remlok's and clothing options would be nice (slightly armoured Remlocks, jeans, cargo pants, leather jackets).
Aside from the character creator... Ship and basic station interiors would be great (and useful to interacting with people). As for weapons... yeah Primary and Secondary with available ammo, but also have a Melee of some-sort (could even be swords for us Imperials, and I guess for the Pirates

). Bullet drop could work.... but I see less damage/effective range being easier to implement. 1st person view is going to be key (but still have a photo mode so we can create amazing shots for stories and RP).
I think we're all going to have a big list for this.