Ability to Make Record Name Read Only

We want to make all Epic fields read only for Epics with 'Done' status, as it makes sense that done Epics should not be changed / edited anymore unless reopened.

We applied a custom layout for 'Done' status in a workflow; however, it seems that 'Name" is the only field we are not able to set as read only in the layout.

Would you consider provide the ability to change record name as read only in custom layouts ?