Two quick but important notes.
Kenichi Kataoka, a key producer in the production of Duel Links, touched on recently at the New York Comic Con about two interesting things.
A) Due to feedback of the lack of a Story Mode, Duel Links plans to incorporate one with the 5D’s Setting starting some time in 2019.
B) They are investigating the addition of a Draft mode.
Also notable is the reason of why Ojamanadala was added to the game was to add additional diversity for the game by making it more feasible for Ojama players to play.