First, I hope Willow does not kill the remaining 2/3 of the Geek Trio. Don’t see why she’d want to – it was Warren, and Warren alone, who killed Tara. Don’t see that the other two deserve death. Jonathon definitely has redeeming features. And Andrew is a child, when you come right down to it.
It has not been stated, but seems plain: Andrew is Tucker’s younger brother. Chronological age unlikely to be younger then 18, but social/emotional age is what? Ten or twelve?
As for Jonathan, what did he do when he re-designed reality to suit himself? He did not set himself up as a cruel, evil sort of guy, but, rather, as a suave, sexy, benevolent leader that everyone admired. And recently, he’s been increasingly disenchanted with and suspicious of Warren, and seemed to be planning to either make a break or throw in a monkey wrench.
And at least once, both Jonathan and Andrew were shocked / raised objections when they realized that Warren wanted to kill the Slayer: “But…she’s saved my life lots of times!”
Second, I’m asking myself, just how evil is Vengence Willow? She’s been brushing aside anyone who stood in the way of her vengence, but without seriously harming them. When she caught up with Warren, she tortured him. For about five minutes. Then killed him. Not a quick death, but… it was a very short torture session. Remember when Angel tortured Giles? The actual torture happened offstage, but was stated to have continued for hours. And Angel’s goal was to destroy the world. Willow’s goal is to punish an evil murderer.
Third, I’m still annoyed by the whole “magic addiction” thing. Willow didn’t need to become a teetotaller. She needed to learn to use magic responsibly. She needed to learn to confine herself to using it for worthy purposes, not to manipulate other people, and not for casual fun.
And four, as someone else mentioned, I’m puzzled as to where Willow’s power comes from. Was she born with it? Did she acquire it? Has she learned to tap into something that she can be cut off from?