The game is meant to be fun 100% of the time what's the point in playing otherwise and the tower events are boring they should stick to events themed by the anime.
nah its not challenging is easy as hell, its just annoying when you constantly need to change your deck to make it work, and since i don't copy paste my decks like you probably do It's discouraging when a game tries to mess with your 🔥
I absolutly agree with you, D.D tower is slow, not fun at all and require you do copy paste / change / update your deck basicaly every floor. For example : Duelist Chronicles was fun because not require from you to complete a thousand of challenges (and rebuild deck often )