I'm not sure I entirely buy the technical limitations on the character creator as an excuse. I used to play Aion, which came out in 2009, and it has an awesome character creator. I do think there is a lack of investment and I hope that after the graphical updates are finished they have the time and resources to give us a real character creator that implements the suggestions on this list, because they're all very awesome.
If I had to add to it, I would agree that Miqo'te face marking should be optional, just a simple click on and off, and maybe sliders for the various face features, not just a choice of 1-6 with very little variation to it. Maybe add in the option to adjust the size of Miqo'te ears a bit too. You don't have to go nuts but large and fluffy, small and fluffy, large and clean, small and clean?