Automatically set players to inactive after some time
It would be desirable if players were automatically reset to "Inactive" state after some given amount of time (e.g. 24h or a few days). This would make it easier to see (for someone considering joining an event) if people have already started playing, without there being a possibility that the assignment is an old state from a previous date.
This could be realized by either resetting each player individually after they haven't had any state update for a given amount of time, or just resetting all players of an instance after no new assignments have been created for that long.
It might be desirable to have this behavior (or the time period) configurable per instance, in case anyone wants to use bb4gg for some kind of long-term assignments.
As an alternative, a simple "Assignment last changed"-display could also improve this.