Scans_Daily

Only having the brain be removed also seemed like a bit of a step backwards, and made them into too much like Daleks. I liked the idea that with Cybermen you would never know what was organic, and what was cybernetic underneath the bodysuit and it would probably vary from Cyberman to Cyberman (and again in the ones from The Tenth Planet, the clothlike facepiece did suggest there was at least some of the face/skull still in place underneath with was a really creepy idea)

The "it hurts" was definitely because of that, but it was also a new notion that was only added in to give the Doctor a way to defeat them in 44 minutes. Emotions shouldn't be lethal to Cybermen, just... wasteful and redundant (from their POV)

As counter examples, in Doctor Who Weekly years before we'd met Kroton, a Cyberman with emotions like compassion and empathy (A good character there, should see if I can dig out his appearances). Miss Hartigan as the Cyberking retained her emotions (and was such a wasted opportunity as a character, she should have stuck around and been a more interesting Borg Queen) and so (in a rather disjointed way) did Yvonne Hartman, and John Lumic himself)