I think that the Trooper minifig should have a helmet. jussayin.
That would be nice idea since the player characters can have different appearances. If they do go forward with this, I really hope the make figures for every companion and one with a helmet/mask to stand for the player character.
That being said, have they even made a Twi'lek lego figure? Sad to say but I haven't gotten a chance to browse some sets in a very long time.