Assistant director of Eva (and Anno's right hand man) Kazuya Tsurumaki
commented on it at Otakon 2001.
Q) Can you explain the symbolism of the cross in Evangelion?
Tsurumaki : "There are a lot of giant robot shows in Japan,
and we did want our story to have a religious theme to help
distinguish us. Because Christianity is an uncommon religion
in Japan we thought it would be mysterious. None of the staff
who worked on Eva are Christians. There is no actual
Christian meaning to the show, we just thought the visual
symbols of Christianity look cool. If we had known the show
would get distributed in the US and Europe we might have
rethought that choice."
--
Michael Wignall
"Tomorrow's just an excuse away..."
I hope you don't mind that I replied once instead of four times. ^_- The way I
understand it is that in Japan, where Christianity isn't such a dominant
religion as here in the U.S., crosses in pop culture are more of a symbol of
the supernatural, or of spirituality in general, than of Christian redemption
specifically. Wearing a cross there could be interpreted in a similar way to
wearing an ansate cross here.
I suppose Lilith is crucified because of what she represents: a return to
whence we came, to the primordial soup, to pre-humanity. Just as Christ was
crucified even though he only brought us what was good for us (according to
Christian belief), so Lilith was crucified even though her release would be a
gift and a blessing. You'll notice too that her "execution" was just about as
permanent as Christ's.
--R.--