How many of you would be satisfied with being able to hide the containers from your list, without actually having them deleted?
Asking because it looks like Apple's never going to allow us to delete them (this thread is at least 5 years old), but it might not be such a big deal to Apple to let us hide unneeded containers on the UI level.
If you think you'd be happy with that kind of solution, please upvote this answer and/or add a comment for it, because I am not quite sure we can see the upvote count :)
Should the upvotes show this concept would help a lot of you, I'll work up the UX details and a template for filing the Feedback, which we can all copy-paste-submit and be loud enough to get Apple's attention about this feature. We can all end up with cleaner lists of containers (yay) and all the containers can still be there, which I suspect Apple will have no qualm with.