The assumption that Elite Advances can't/shouldn't form a part of the character's background is a bit silly when Untouchable is the main Elite Advance they're showing off; a trait you're born with.
Actually, they specifically mention in the description of the Untouchable that it could be a dormant ability. So Simple Jack can wake up one morning to the terrible feeling that he is in fact an Untouchable, but Acolyte Mary can't do the same with the Sororitas.
That's an idiotic rationale on part of the writers, though. Suddenly waking up one day and realizing that you don't have a soul is one thing - having that soul and then lose it because apparently your soulless-ness was dormant during a large part of your life is just.. I don't know what to say.
Untouchable really should have a sticker on it saying that it can only be taken on creation - but there's too many issues with DH2 Untouchable vs. Fluff Untouchables to list.
I can't wait to see what rationale they'll think of next, to explain why Untouchables can get Psyniscience same as any other character.
Well, my example is the Tech-Priest who is actually pretty similar to a Sororitas (as far as origins go). The Tech-Priest is not an Elite Advancement option - it is represented by the Adeptus Mechanicus Background that gives the Mechaniucs Implants trait to the character. Even though by your logic it should be an Elite Advancement because that trait is nothing to sneeze at.
Hmm? I never said that Tech-Priests should be an Elite Advancement, nor did I imply that it should be. Do you feel that you cannot properly depict a Tech-Priest with the assigned Background without suggesting to make that Background more powerful than the average background?
Because if so, maybe it should be an Elite Advance. I'm not saying it should be, but it seems like you are saying it should be, based on my logic. In what way would you consider the Adeptus Mechanicus Background more powerful or less balanced than the other Backgrounds? Or is it just the Mechanicus Implants that are rubbing you the wrong way?
I think he's saying that the Mechanicus Implants give the background a distinctive advantage compared to the others.