Master rank
There is no reason to play as a character u have already mastered, it is very frustrating because as u finish leveling up characters and start getting the really good upgrades, it's only 20 kills unti...
Forum Discussion
You can play as a master-character, simply for that good feeling that you have all the upgrades. 😉 But I agree with the reward for promoting - it should be different for each level of promotion (5000 / 10000 / 20000...). Receiving the same amount of money for first and last promotion doesn't make much sense to me.
