Oh, wow! interesting. Thanks for the sharing and I’ll give it a try.
Cheers!
UPDATE:
I just gave it a try in UE4. Deactivate seems to work but Activate didn’t work.
Besides, it’s hard to know whether the actor is activated or not from the WorldOutliner and also we should be able to activate/deactivate a folder and its children.
Anyway, I appreciate your efforts and it seems feasible and I hope Epic will implement it into the Editor properly in the near future.
Thanks.