My team heavily relies on Trello and I am swamped with notifications about card moves, due date changes and archived cards.
They @ me at stuff and I have no way to see it in the 50 dummy notifications I can get every couple of days. Having no way of configuring your notification settings is awful UX.
I want to know about comments on cards, when I'm added to a card or been @. Watching a card for me is about the content and discussion there, not its status.