Athayniel wrote...
Instead of immaculate conception I think Ieldra is more digusted by the prospect of Shepard's magic sperm. Ieldra wants any pregnancy that Miranda has to be a result of "Science!" as opposed to Space Jesus.
The Space Jesus aspect is more of a metaphor than any real plot-affecting factor. Shepard may be the hero of the galaxy and all that but in ME1 he's just a dude, and in ME2 he's a sort of undead cybernetically-enhanced dude. None of that makes him a physical god. I doubt the writers are that lame.
Note: Good aversion of this is done already with Morinth if you bring her aboard and decide to "do her". Think Shepard's too "special" to fall prey to an ardat-yakshi? BAM! Too Stupid to Live.
Funny sidenote: If it does turn out that Shepard is the only one that can get Miranda pregnant as she is, it's still Science! since she put him back together and for reasons known only in the dark mind of the writer, gave him cybernetic sperm.