I have an "invoice" task type that doesn't get its own list and generally is an outlier among other tasks on a project. This way I can filter my entire workspace for just invoices across all projects. I use the subtasks to log invoice numbers and payment status and have automations to set up assignee and dates, but the trigger right now is to type "invoice" in the subtask. Recently I forgot I had forgotten I'd created that trigger so have been manually assigning the task type to my subtasks. And since there are other people involved, we'd all have to remember to type "invoice" to trigger the automation.
So I was thinking whether there could be an automation that was something like: "when subtask is created, assign task type to,' match parent task'".