'...that no thought went into which character was fulfilling what role.'
That's what I said when the episode first aired. There was so little character development that it could have been written for ANY sci-fi show(or even a supernatural show). It was billed as a Ianto-centric episode but it wasn't, there was more character development for him in Fragments. I just hope they don't get Hammond to replace CC.

Love your rewrite, if only you could write for the show. They already 'borrowed' you Ianto!ManWhoreSpy idea.