Few thoughts:
I was baptized a Catholic as a baby. I could go running through my nearest Catholic Church naked, screaming I am a lesbian that recently had an abortion, and that cult will STILL refuse to take me off their roles. I WISH I could take my name off but NO! We can't have that!
Disfellowshipping a victim of sexual abuse? No, that's absolutely wrong. A child cannot give consent. Any woman on these boards will tell you there has been a period in our lives, say 12-16, where the hormones are going and we do want to get attention from men. This is natural and in no way should be taken advantage of by an adult, no matter how "slutty" the dress.
Baptizing children? Well, I was baptized a Baptist at the age of 12. I knew what I was doing and I wholeheartedly believed in it. It was right for me at the time, and even now at the age of 39, I look back at that time very fondly. It's filled with good memories. I don't hold a lot of the same beliefs now, but I most certainly don't regret it.
Disfellowshipping a naughty child? I wouldn't go that far, but I do think that public reproving, such as for stealing, isn't such a bad idea. I like the "it takes a village to raise a child" thought. Hopefully, the village isn't filled with idiots.