This has been suggested before. We have tested the unlocked camera and decided against it, because the few that tested it didn't like it (neither did I). It feels weird / wrong being able to tumble looking forward and shooting backwards, also seeing other characters tumble / wallrun facing away from you, but shooting you. That did not exist in the traditional / vanilla gameplay and doesn't feel right, so I doubt this will be changed. It would probably cause too much backlash here.
