Prime Suspect meets Ars Magica - now there's a pitch you couldn't make to a British producer. In this version Peter was a black woman with Jamaican parents but Lesley and Nightingale were pretty much how they ended up in the books. There was going to be a whole team of wizards in the classic ensemble cop show style including a new age witch and someone practising a Non-European tradition from China or India.
At one point I toyed with the the idea of Simone (Peter as was) discovering or, more precisely, being afflicted by an ancestral spirit - that bit was strongly influenced by Due South particularly the episode where Constable Fraser opens his cupboard to find that his dead father and a bunch of Native Canadian elders have taken it over as a sweat lodge. I liked that intrusion of the fantastic into the mundane - I also liked Fraser's matter-of-fact acceptance of the situation.
(3) If you can't then you're probably a gibbon.
(4) Well probably not exciting per se but interesting...to me at least.