I do not know why she inserted that scence at all. It was not needed. Maybe just to show that Kanda is stilll there?
Yeah, good point. Of course, Hoshino didn't have to write about things falling on Chaoji and Kanda saving him in the first place.
Is computer concious? No. However, programs inside it recognize viruses and destroy them. Innocence work by the same principles.
If Innocence wasn't conscious to some extent, how would it even know that it was being betrayed? The parasitic nature of some Innocence also seems to support that idea; parasites are living things that feed off the life of their host (parasitic-type Exorcists apparently eat more, hence... Allen). It may not be organic, but it's hard to think of Innocence as being similar to, say, a rock.
If you seek giantic phallic swords that much you can simply ready Berserk XD
What... long white hair, doggy ears, fangs, claws, giant phallic sword? (Although that actually sounds a little more like Allen... haha.)