Currently i'm investigating the use of Trello as a PM tool. It would be able to work out fine with some additional power-ups. But because it would only work with some power-ups, is there some sort of guarantee that they will be available in the future? Like they won't get deleted or something? Because then Trello won't cover all the required features.
Another thing, is Trello responsible for the maintenance for the power-ups or the developers?