While simply not using procs would "fix" this, I'm more concerned with convention. Queuing Interactors as a very real world use case and that although it may not be a active concern now, it very well can be in the future. I'm also concerned that this is a step away from the original intent of Interactor. @jasonroelofs said it better than I can here: https://github.com/collectiveidea/interactor/issues/27#issuecomment-34982806.