Even if they would do as you propose, there would still be people who want something else. This is why i would like to see the possibility to add your own pics to the portrait folder. Maybe someone wants to use the old pics from Baldurs Gate or even Neverwinter Nights, or they made their own artworks based on this game and want to share self-made pics with others. Or you are someone who makes Let's Play vids and want to use your well-known "logo" or picture. Ofc Larian develops this game, but an active community can add a lot of stuff to the whole experience. See, i like a detailed character creation (i would even say the options in the current build are limited, i would love to see more hairstyles, skin tones, faces, eye colors, body shapes, a tallness slider, more haircolors, just more of everything - also portraits - , but i can live with what we have now)

also, this is beta. I would say they will add more pics, but if not, they will probably add more after release by an update, maybe even more hairstyles and such (there are mirrors in the game you can click, so this is probably something that could give us the ability to change the appearance of our characters in the future, who knows?).