Unexpected regeneration cliffhanger: Yes indeed, liked that very much.
Torchwood, Martha (who's forgotten how to act again), Sarah Jane (yay): Yes, ok, I'll buy that, made me smile.
Stolen planets in perfect balance (one of them Callufrax Minorr, a nice touch): Nod to the past, reasonably subtly done, yes.
but
Harriet Jones, former prime minister: A weak joke the first time, weaker still now, worse with the Dalek providing the punchline.
Harriet Jones, technical genius behind the subnet? What? WHAT?
The Dalek "message" being just "Exterminate" over and over... really, Russell, you can do better.
