In general, I would like a few different lighting settings for the cc, like outdoor/indoor, night/day, so you can get a better impression of your character's appearance. It was always frustrating creating a lovely Warden or Hawke, only to come out of the cc with their skin paler and their make-up garishly bright.
A selection of lines to test the voice options would be good. That way we can hear them, and also see our character speak. Don't want to make a character that looks like they're chewing bees when they talk.
For the appearance customisation:
-more tattoos/face paint
-scars, freckles, moles, shadows beneath the eyes, realistic age lines (not the reanimated-dead look that's currently available).
-more eyebrow shapes, mouth shapes, eye shapes and nose shapes. ME had quite a few, though you couldn't alter them much.
-Morrigan, femHawke, maleHawke, Aveline's hair available for the Inquisitor. Please don't lock off the best hairstyles in the game.
-Better beards for men (nothing that clips through the jaw or makes them gaunt-faced)
-Inquisitor elf ears that stick out (like the model in the OP), not the stuck-to-the-head ones from Origins
-horn sizes for the Qunari, from non-existent, to chopped down (like Ketojan), standard size, and maybe even large like the Arishok
-unusual eye colours. DA2 introduced yellow and turquoise eyes, but it would be nice to have some more, like purple. The books mention that elves can certainly have them.
-earrings, like Duncan's, Isabela's or the Arishok's
-better make up. Eyeliner would be nice, like Isabela's, maybe in a couple of styles.
-better hair. Fewer dowdy styles, more nice short ones (Merrill's and Cassandra's were the only nice short ones available in DA2's cc). Curly/wavy hair. Long hair, perhaps in the form of a braid (like the femdwarf in the OP), or a high ponytail. A variety of fringes or partings, etc. More styles that are tied back, buns, braids, plaits, tails, etc. More shaved styles (the elves had one in DA2), cornrows (like Sten's, but for both men and women), dreadlocks, individual braids.
Ah... that's everything I can think of for now. The hair is the big one for me, since it's what we see the most.