Add current subscriber count and current sub points to payloads
In subscription based events, add fields with the current number of subscribers and how many sub points the broadcaster currently has.
Since there is still no way to get these numbers except of iterating over the full subscriber list (which costs lots of requests on bigger channels) this would be an awesome addition to subscribe/unsubscribe/sub expired-events.
Alternative: Subscriber count/Sub points change events. But that probably would be too many events on busy channels.