Inherit tags from parent nodes
I have seen this feature in mindmapping software and would personally find it useful. For example, when I am looking at my due tasks, i tend to filter by tag. Every single task needs to be separately tagged, or it won't appear when filtered. If they inherited tags this would be more straightforwards (NB I can understand that many people may not like this, but one could make this behaviour optional)
nick riches commented
Yes, this is what I do. But I often assign a task a due date without a tag. If I filter by tag, and an item isn't tagged I may miss it. Tag inheritance would be a simple way of ensuring that all items were tagged.
Thanks for the suggestion. Have you tried using filtering on the list page, like "due:now #my_tag" - would it work as a workaround?