Level up character materials are way too scarce! I cannot play the game for a long time because the characters needs to be leveled up high to cope up with the doffoculty at least. Instead of the limitation on the exp and memory plus money eventd, make it infinite. It will be easier to have a higher level which is enough to fight campaign enemies. The other means of improvement like orbs and board items are fine but the exp is really something to be reconsidered