Oh, I didn’t expected this! Then the order could turn out as a problem in some situations. How about to give us a priority property to control this? The engine should first collect every actor to activate and than decide by using the priority which screenplay should be executed first. Only if the priority is the same the execution should be random. Of course we also should have a possibility to change this per screenplay.
If you like that proposal, please add it to your to-do list.