I've said before that I have no objection in principal to feature a child-murderer as a major character, but there ought by god be a point to doing so! As it is, Danes ended up as a rather pointless (almost literal) spear-carrier, his presumably satirical roles as messiah or corporate pitch-man utterly forgotten. (But I guess I'm repeating myself, aren't I?)

Totally belittling Rose as Bad Wolf and how she made Jack and his sudden immortality a fixed point in time, much?

Completely. And it doesn't even make retroactive sense. With luck, Torchwood is dead and Doctor Who will just pretend this all never happened.