The login page already allows some customization with custom CSS and icon.
Maybe it would also be good to have a more standarized option where you can define some text, for example:
This Kibana environment is managed by X, in case of questions or issues please contact Y
Or reserve a bit of space in the UI of the login page where the user can place his own custom text via kibana.yml?
But I am a bit hesitant to go down this road to prevent issues with future release.
Many users, links being shared, new potential users in company are unsure who to contact. Get requests via via for all sorts of people. Would like to standarize requests towards 1 generic mailbox.