Some quick thoughts on the original TV show...
The idea of multiple sides in the war. Vistors & Resistance, but Nathan Bates playing both sides
Julie pretending to be on Nathan's side/not Resistance
Every episode, Mike & the gang having to introduce themselves to people. Wouldn't Mike Donovan be he most recognizable man on the planet?
The "love Triangle" between a guy , a just former teenager, and her 2 (two!) year old daughter
The wrong characters being cut