Just 2 things i think are most important.
- Fix Grand Arena matchup so people can fight more or less same level of players and not 10 time harder opponents. That is arguably the most fun section of the game and you are killing it for a lot of players as they loss interest in GA altogether when they are forced to fight ridiculously hard opponents.
- Make already released lightspeed bundles available all the time so people can make a decision when and what to farm based on their preferences and in light of their desire to purchase this or that LSB.