If you don't know what shadowbanning is, see this Wikipedia article. I have a few very malicious users on my forum who continue to make alternate accounts (they bypass the mod queue with VPNs) and harass my users and staff. I have tried everything -- even banning the hostnames of their VPNs (with add-ons), but they just keep coming back. I think I could hold them off a lot longer with shadowbanning. There are a lot of reasons why I would like to see shadowbanning implemented, but this is perhaps the most pressing.
I've seen other threads recommending this or an add-on for this, but they never came to fruition.(https://xenforo.com/community/threads/hellbanning.44903/) (https://xenforo.com/community/threads/hellbanning.91645/)
I would really appreciate it if this were implemented and I think it could make banning much more effective. Thank you for your time.