Currently when bkr remove-account is run, if the closed account owned any systems, the user who ran the remove-account command will become the new owner of the systems. However since the person running bkr remove-account may just be a support team member they would usually want the systems to be owned by the manager of the closed account, or by "admin" or similar. bkr remove-account should accept an option to control which account will become the new owner of the systems.
Patch available on gerrit: https://gerrit.beaker-project.org/#/c/4392/
Beaker 21.1 has been released.