You have a lot of different suggestions here, the latter of which have not been implemented so I will leave the topic open, but I wanted to let the thread know that we have recently released the ability to remove followers from your list by Blocking them.

https://twitter.com/TwitchSupport/status/1243643979897417730?s=20

You can see how to Block a user here: https://help.twitch.tv/s/article/how-to-manage-harassment-in-chat#BlockWhispersandMessagesfromStrangers

Additionally, you can see your channel Banned Chatters in your Moderation Preferences in the Dashboard

https://dashboard.twitch.tv/settings/moderation

Hi, I know that this is a very late response, but we’re hoping to find time to address this issue later this year. There are a few steps we’ll have to take to solve this problem in a way that will work for all streamers, but we understand the severity of the issue.

This poses a couple of hard problems. We’ll look for feedback on these points in comments before declining.

1) IPs change. A lot. A broadcaster might lose a significant portion of their audience, and viewers might get confused if there are a lot of banned IPs (such as universities).

2) System load. Looking up a enormous list of IPs to see who is allowed to watch on every single video play is an enormous system load I’m not sure we’re willing to take on.

3) Support costs. “Why can’t I watch X/Y/Z, I don’t know who they are” would come up. Our support isn’t free, and we’d like to be able to focus on issues like passwords, bugs, etc.