[quotePeabody and his ink only managed to screw up Luccio because of the body switch.][/quote]
Not because of the body switch, but because of the ink.
Peabody and his ink only managed to screw up Luccio because of the body switch. In Turncoat it states that every wizard under the age of 50 was more susceptible to Peabody's manipulation and had the sleep command programmed in. Several of the younger wardens also had the lone gunman reprogramming as well. He was only able to impact the Senior Council in subtle ways. Ebenezer said that the ink only let Peabody nudge them, but that they were too "crusty" to bend. Yes, Peabody could manipulate the older wizards with his ink, but the only people he could have forced to the island was a younger wizard. Otherwise, it would have had to have been a co-conspirator.
We don't know that, nor if a Senior Member was on the island with Peabody influenced by the ink could you really call him or her a co-conspirator.. The key word here is,
under the influence, not fully responsible.. Maybe not zombie or robotic mind control, but enough influence to severely affect judgement.. Also like all of us, wizards, even senior wizards have different levels of tolerance to chemical influences.
Official testimony from Eb at the trial, page 386 bolding and italics mine...
"Working on the evidence Dresden found." Ebenezar said, "Warden Ramiez and I searched Peabody's chambers thoroughly not twenty minutes ago. A test of inks he used to attain the signatures of the Senior Council for various authorizations revealed the presence of a number of chemical and alchemical substances that are known to have been used to assist psychic manipulation of their subjects. It is my belief that Peabody has been drugging the ink for the purpose of attempting greater mental influence over the decisions of the members of the Senior Council, and that it is entirely possible that he has compromised the free will of younger members of the Council outright."
Listens-to-Wind's mouth opened in sudden surprise and understanding. He looked at his ink-stained fingertips, and then up at Peabody.
Now in the end the Senior Council may not admit to the extent that they were compromised, but from Listens-to-Wind's honest reaction, the effect on the Senior Council was potentially quite serious.. Remember he would know as both a medical doctor and a scientist the effect of those drugs on the mind, even the minds of Senior Council members.
No, the whole White Council, if they came in contact with the ink, was affected to some degree. ages 397- 398 Turn Coat on the effects on the whole of Peabody's ink, from Lara's independent investigations;
He might have wound up with his brains spattered all over a desolate little hell hole in the Nevernever, but Peabody had influenced one hell of a lot of damage before he was through. A new age of White Council paranoia had begun.
It was all tougher for the members of the Senior Council, in my opinion, all of whom had almost certainly been influenced in subtle ways. They had to go back over their decisions for the past several years, and wonder if they had been pushed into making a choice, if it had been their own action, or if the ambiguity of any given decision had been natural to the environment. The touch had been so light that it hadn't left any lasting tracks. For anyone with half a conscience, it would be a living nightmare, especially given the fact that they had been leading the Council in time of war.
I tried to imagine second-guessing myself on everything I'd done for the past eight years. I wouldn't be one of those guys for all the world.