I’m assuming this open beta is done to gather feedback from the community. We were able to warn you able balance issues with Ambra and Galilea because they aren’t difficult to unlock.
But many of the characters are behind very tough unlock requirements. This is fine for the final game but for the beta, every character needs to be unlocked so we can test them and give you proper feedback.
The vast majority of beta players haven’t even used the bottom half of the cast and thus we cannot provide balancing opinions on them.