Has anyone ever created a service that any game can sign up for, that automatically bans every username on a list of confirmed exploiters? Of course, video proof for everyone there would be stored.
Roblox’s moderation is pretty lenient AFAIK and also not very reliable, so perhaps there could be a community-created global banlist.
There have been people that have done the same thing you’re suggesting on other games, and they have all not gone very well at all, though their methods of adding people to the ban list were not very strict relative to yours.
Then again, there’s always the issue of the ban-list owners going rogue when they accumulate enough trust and start abusing their power.
I don’t believe I’ve ever heard of this use in specific occurring on the platform before though.