If they wouldn't make it the modders would. Same as oblivion there would be more hairstyles mods, piercings, races.etc But that would be only possible for PC users.
If they wont do the tatoots.etc then it would be pity for the console gamers.
Edit: And what about scars? i would give him a scar on his face at his left eye:)
Features that obviosuly are possible and should be in the game should never be left for the modding community to do. I certainly dont hope (or think) that Beth relies on the community to finish their product for them. Granted, mods was the only thing tha mdae OB playable, but it should never be their intention to leave stuff out and epect "Us" to add it in... mods should add stuff the devs have rejected with good cause or havent thought about
Yeah I'd definitely love body tatoos and piercings too. I would definitely make my assassin have some weird tatoo on his face, with two rings going through his left eyebrow. And my warrior would have something tribal on hir right arm, and maybe some dragon tatoo along his back. (yeah I'm a maniac when it comes to tatoos lol