I love this idea! You could offer the featured badge to donators to your community as a perk. You can give your staff the verified badge which is handy to show what users your members could ask help from.
But there is one thing right now I'd add to this plugin to make it better, Put the Badge next to the username of this Chat Addon "siropu chat" as it currently doesn't. Add that in the next update and I'll move this to 5 stars :) Great work!