they need to either stop releasing additional mercenaries, or give us another way to get more pirate contracts. Basically everytime I get enough contracts to unlock a mercenary they release a new one, so I never have any contracts to spend upgrading hero rarities.
We also need to stop the way it pulls your screen over every time you have the items necessary for an exchange on one of the temporary lands. These tend to get unlocked in runs once you get a group of a needed item, then it is infuriating when you are trying to organize the received items and keep getting dragged back across the screen over and over again. Just give us an indicator bubble like you do for frit exchanges on the main world