So this new trigger event will be useful to control game flow and help implement simple FSM in event logic, it would also make cut scenes a bit easier,
so basically you can put some logic in group that needs to be evaluated every tick, and some where else in your event sheet you call the system set group to active, there might be thing you want to happen only once when that group get's set to active maybe some setup data that you did not need before the group was active, or you can use that trigger to clean up stuff from previous groups, or even use it in you game logic, i know there are work around for this so the priority is low, but it would be nice to have this built into the engine with having to emit a separate signal
i'm not sure how difficult it would be to implement,
** also this is not the current is group active condition which happen every tick, i'm talking about a new trigger
You can use 'trigger once' inside a group for this.