Legends Celebration Arenas
Kabam, the 6-Star "Legends Celebration Arena" is probably the worst piece of content you added so far this year. It has been a horrible experience so far. The points are too low, making each milestone are too far in between. The total yield is just good for half a 6-Star Basic Crystal (only to eventually pull a Psycho Man ugh). The time is too short to make it through all 3 arenas as well.
You could've made this grind less nasty. Why not allow 3-Star Champions for a shorter grind? Or, make the live time 2 weeks instead of just one for all 3 arenas? Can't complain about the shards and the RNG factor of crystals, though. It is what it is. But yeah, at least make it a less painful experience for your players.