So what? You want to character create the whole party? Change their gender, appearance, class, backstory, all that at will in a CC menu?
With Maker's Sigh, in theory you can turn Alistair into a 2-handed reaver. You could even (stupidly) put all his points in Magic and nothing else. I mean, Sylvius' point is correct, we can already transform a lot of what they are via use of Maker's Sigh, though it doesn't let you change their class. Some might argue Maker's Sigh should only be usable by the PC (to only "redo" themselves) - but it isn't.
And, with mods, BTW, yes, you COULD change their appearance (I think there were 300 different DAO mods for that), even in some cases their class, and yes, make Alistair enjoy the love of a man, or Morrigan the love of a woman. (*)
Oddly enough, I might say to this entire argument that it's unnecessary as mods will be created to alter it (i.e. if the characters are not "universal" as written, there will be mods to make them that way; there always are) ... unfortunately, I have my doubts there will be many mods, at least and especially early on, for DA:I.
(*) Personally, I think the jury's out on whether Morrigan is attracted to women, but my personal theory as to why she isn't interested in a female PC is because she wants the child of a Gray Warden to get the soul of the OGB into, and obviously a female Warden can't give her that.