This deck is part of my personal league format, where all cards in a set are divided among leaders, then the decks play each other. It's only competitive through that lens, and to the extent that cards should or should not be played, know almost all cards in every set are played.
The Mandalorian's was the first of eight I built for the initial League Two season. The idea is that the top decks in this group will face off against League 1's decks (built off Spark of Rebellion cards) in a type of Champions League of Unlimited cards. To get there, the obvious upgrade strategy build around this leader will have to pay off.